Nanna/Sin, Mesopotamian God of the Moon
Nanna-Suen · Sîn · Ašimbabbar · Lord of the Moon · Keeper of the Month · The Measurer of the Night
Nanna/Sin is the divine measurer of the night: lord of the moon, sacred time, calendars, celestial omens, divination, fertility and journeys made beneath the stars. His waxing and waning light does not merely illuminate darkness. It measures it.
Game Mechanics
Nanna/Sin is a Greater Deity. Select the edition in play. Each tab contains the complete edition-specific mechanical package: stat block, spellcasting, feats where appropriate, domains, domain powers, domain spells and divine abilities.
*CR 40 and PB +11 are SpiralWorlds epic extrapolations beyond the normal published monster progression.
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 34 (+12) | 28 (+9) | 34 (+12) | 32 (+11) | 40 (+15) | 36 (+13) |
Saving Throws Str +23, Dex +20, Con +23, Int +22, Wis +26, Cha +24
Skills Arcana +22, History +22, Insight +26, Nature +22, Perception +26, Religion +22
Damage Resistances acid, cold, fire, lightning, thunder; bludgeoning, piercing and slashing damage from attacks that are neither artifacts nor divine in origin
Damage Immunities necrotic, poison, psychic, radiant
Condition Immunities charmed, exhaustion, frightened, paralyzed, petrified, poisoned, stunned
Senses truesight 300 ft., passive Perception 36
Languages all languages; telepathy 1 mile
Traits
Greater Divine Nature
Nanna’s manifestation requires neither air, food, drink nor sleep. He cannot be transformed against his will. Magic of 5th level or lower cannot banish him, alter his memory, compel his movement or change the rate at which he experiences time unless the effect comes from an artifact or divine power.
Legendary Resistance (5/Day)
If Nanna fails a saving throw, he can choose to succeed instead.
Magic Resistance
Nanna has Advantage on saving throws against spells and other magical effects.
Moonlit Revelation
Magical Darkness within 120 feet of Nanna becomes Dim Light unless created by an artifact or divine power. Invisible creatures within the area are outlined by silver radiance and gain no benefit from Invisibility against Nanna.
Reckoner of Time
Nanna always knows the exact local time, lunar phase and elapsed duration of any effect he can perceive. He cannot be surprised. At the start of combat he may exchange his Initiative with that of one willing creature he can see.
The Lunar Cycle
At Initiative count 20, losing Initiative ties, Nanna may enter another lunar phase. He may begin an encounter in any phase.
Divine Spellcasting
Wisdom is Nanna’s spellcasting ability (spell save DC 34, +26 to hit with spell attacks). His divine spells require no Material components.
At will: augury, clairvoyance, detect magic, detect thoughts, dispel magic, divination, freedom of movement, scrying, see invisibility, teleport, true seeing, zone of truth
3/day each: commune, etherealness, foresight, hallow, plane shift
1/day each: gate, mass heal, time stop
Actions
Multiattack
Nanna makes three Crescent Scepter or Moonfire attacks in any combination.
Crescent Scepter
Melee Attack Roll: +23, reach 10 ft. Hit: 34 (4d10 + 12) Force damage plus 27 (6d8) Radiant damage. The target cannot become Invisible until the end of Nanna’s next turn.
Moonfire
Ranged Spell Attack: +26, range 300 ft. Hit: 66 (12d10) Radiant damage. The target sheds Dim Light in a 10-foot radius until the end of Nanna’s next turn and cannot benefit from Invisibility during that time.
Full Moon Revelation (Recharge 5–6)
Nanna fills a 120-foot-radius Sphere centred on himself with revealing moonlight for 1 minute. A hostile creature in the area must succeed on a DC 34 Wisdom saving throw or lose the benefits of Invisibility, illusion-based disguises and magical concealment while it remains in the light. Secret doors, magical writing and deliberately concealed objects shine faintly. An affected creature repeats the save at the end of each of its turns.
Measure the Appointed Hour (Recharge 5–6)
Nanna chooses up to three creatures he can see within 120 feet. Each target makes a DC 34 Charisma saving throw. On a failed save, its next turn occurs at Initiative count 0 and it cannot take Reactions before that turn begins.
Eclipse of Evil Omen (Recharge 6)
A black lunar shadow expands from a point Nanna can see within 300 feet, creating a 60-foot-radius Sphere until the end of his next turn. An enemy entering the eclipse for the first time on a turn or starting its turn there makes a DC 34 Wisdom saving throw. On a failed save it takes 45 (10d8) Psychic damage, has the Frightened condition until the eclipse ends and cannot gain Advantage on a D20 Test. On a successful save it takes half damage only.
Reactions
Foretold Error
When a creature Nanna can see within 120 feet succeeds on an attack roll, saving throw or ability check, Nanna forces it to reroll the d20 and use the new result.
The Night Road Opens
When Nanna or an ally within 120 feet is targeted by an attack, Nanna teleports that creature up to 60 feet to an unoccupied space he can see. If this places the creature beyond the attack’s reach or range, the attack misses.
Legendary Actions
Nanna can take 5 Legendary Actions, choosing from the options below. Only one option can be used at a time and only at the end of another creature’s turn. Nanna regains all spent Legendary Actions at the start of his turn.
- Night Step. Nanna moves up to half his Speed or teleports up to 40 feet.
- Read the Sign. Nanna makes a Wisdom (Perception) or Wisdom (Insight) check and may immediately identify one illusion, Invisible creature or magical condition he can perceive.
- Moonfire (Costs 2). Nanna makes one Moonfire attack.
- Turn the Measure (Costs 2). One willing ally within 120 feet moves up to its Speed without provoking Opportunity Attacks.
- Silver Judgement (Costs 3). One creature within 120 feet makes a DC 34 Wisdom saving throw. On a failed save it has the Blinded condition until the end of its next turn and cannot benefit from Invisibility for 1 minute.
Mythic Trait: The Moon Renews
If Nanna’s manifestation is reduced to 0 Hit Points for the first time, it does not immediately disappear. At the beginning of his next turn, unless prevented by an artifact or another deity, he regains 540 Hit Points, enters the Full Moon phase and recharges Full Moon Revelation, Measure the Appointed Hour and Eclipse of Evil Omen.
Cleric Domains — 5.5e / 2024
Published thematic fit Light Domain
SpiralWorlds Moon Domain
Legacy-compatible Knowledge · Order · Twilight
SpiralWorlds Moon Domain
The Moon Domain represents lunar revelation, sacred timing, omens and passage through darkness.
Moon Domain Spells
| Cleric Level | Always Prepared |
|---|---|
| 3rd | Faerie Fire, Augury, See Invisibility, Zone of Truth |
| 5th | Clairvoyance, Daylight |
| 7th | Divination, Freedom of Movement |
| 9th | Scrying, Hallow |
3rd Level — Moonlit Initiate
You gain proficiency in one of Arcana, History or Nature. While in Dim Light or Darkness, you treat Dim Light as Bright Light out to 60 feet.
3rd Level — Channel Divinity: Full Moon Revelation
As a Magic action, expend one use of Channel Divinity to create a 30-foot Emanation of silver moonlight around yourself for 1 minute. Invisible creatures in the Emanation cannot benefit from Invisibility against you, and you have Advantage on checks to recognise illusions, disguises, hidden magical writing and magical concealment within it.
6th Level — The Night Road Opens
When you or a creature you can see within 30 feet is targeted by an attack while in Dim Light or Darkness, you can use your Reaction to teleport that creature up to 15 feet to an unoccupied space you can see. You can use this feature a number of times equal to your Wisdom modifier per Long Rest.
17th Level — Thirtyfold Revelation
Full Moon Revelation expands to 60 feet. You and chosen allies inside it cannot be surprised, and hostile Invisible creatures gain no benefit from Invisibility against chosen creatures in the moonlight.
Defense
AC 62, touch 35, flat-footed 51 (+10 Dex, +27 natural, +14 deflection, +1 dodge)
hp 880 (40d10+560 plus 100 mythic)
Fort +38, Ref +34, Will +41
DR 10/epic; SR 51
Resist acid 30, cold 30, electricity 30, fire 30, sonic 30
Immune ability damage, ability drain, charm, compulsion, death effects, disease, energy drain, fear, paralysis, petrification, poison, sleep and stunning
Offense
Speed 40 ft., fly 120 ft. (perfect)
Melee +5 axiomatic sickle +59/+54/+49/+44 (1d6+18 plus 2d6 against chaotic creatures)
Space 5 ft.; Reach 5 ft.
Special Attacks eclipse of evil omen, full moon revelation, lunar cycle, measure the appointed hour, moonfire, mythic power
Statistics
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 36 (+13) | 30 (+10) | 38 (+14) | 34 (+12) | 44 (+17) | 38 (+14) |
Base Atk +40; CMB +53; CMD 88
Skills Knowledge (arcana) +55, Knowledge (history) +55, Knowledge (nature) +55, Knowledge (planes) +55, Knowledge (religion) +55, Perception +66, Sense Motive +66, Spellcraft +55, Survival +60
Languages all; telepathy 1 mile
Feats
Combat Casting, Combat Reflexes, Dodge, Empower Spell, Eschew Materials, Extend Spell, Great Fortitude, Improved Critical (sickle), Improved Initiative, Iron Will, Lightning Reflexes, Maximize Spell, Quicken Spell, Skill Focus (Perception), Skill Focus (Sense Motive), Spell Focus (divination), Greater Spell Focus (divination), Spell Penetration, Greater Spell Penetration, Weapon Focus (sickle)
Mythic Feats: Great Fortitude (Mythic), Improved Initiative (Mythic), Iron Will (Mythic), Lightning Reflexes (Mythic), Mythic Spell Lore
Mythic Power
Mythic Power 10/day; Surge +1d12.
Spell-Like Abilities
Caster level 40th; concentration +54. Save DC 24 + spell level unless an ability specifies another DC.
Constant: detect magic, discern lies, freedom of movement, true seeing
At will: augury, clairaudience/clairvoyance, daylight, detect thoughts, dimensional anchor, dispel magic, divination, greater dispel magic, scrying, see invisibility, teleport, zone of truth
3/day: commune, etherealness, greater scrying, hallow, plane shift, moment of prescience
1/day: foresight, gate, miracle, time stop
Mythic and Divine Abilities
- Divine Deflection
- Moonlit Revelation
- Reckoner of Time
- Lunar Cycle
- Moonfire
- Full Moon Revelation
- Measure the Appointed Hour
- Eclipse of Evil Omen
- Lunar Renewal
- Thirtyfold Reckoning
- The Night Road Opens
Divine Deflection (Su)
Nanna adds his Charisma modifier as a deflection bonus to AC and CMD. This bonus is included above.
Lunar Cycle (Su)
- Dark Moon: 50% concealment against attacks originating more than 30 feet away.
- Waxing Crescent: fast healing 30.
- Half Moon: one additional immediate action each round, defensive or divine abilities only.
- Full Moon: invisibility and magical concealment within 120 feet do not prevent Nanna from perceiving a creature.
- Waning Moon: Nanna automatically attempts to dispel one hostile magical effect affecting him at caster level 40th.
Moonfire (Su)
Ranged touch, 300 feet; 20d6 sacred damage. A struck creature is outlined in silver radiance for 1 minute and gains no benefit from invisibility. DC 44 Will reduces the revealing duration to 1 round.
Full Moon Revelation (Su)
Three times per day, Nanna creates a 120-foot-radius field of revealing moonlight for 10 rounds. Invisibility, illusion-based disguises and magical concealment are suppressed unless created by an artifact or divine source. DC 44 Will suppresses the revealing effect on a creature for 1 round.
Measure the Appointed Hour (Su)
Three times per day as a standard action, Nanna chooses up to three creatures within 120 feet. DC 44 Will negates. Failure reduces the creature’s Initiative to 0 until the beginning of Nanna’s next turn and prevents attacks of opportunity.
Eclipse of Evil Omen (Su)
Once per day Nanna creates a 60-foot-radius supernatural eclipse within 300 feet for 10 rounds. Enemies entering or starting within it make DC 44 Will saves or become shaken and take a –4 penalty on attack rolls, saving throws and skill checks for 1 round. Failure by 10 or more causes frightened instead.
Reckoner of Time (Ex)
Nanna cannot be surprised and always knows elapsed time, local lunar phase and the remaining duration of non-divine spells and conditions he can perceive.
Lunar Renewal (Mythic)
The first time Nanna would be slain, he may expend 5 uses of mythic power to return at the beginning of his next turn with 440 hit points, enter Full Moon phase and recharge Full Moon Revelation and Measure the Appointed Hour.
Thirtyfold Reckoning (Su)
Once per round Nanna names an observable action, target or event as a foretold sign. Until the beginning of his next turn, he gains a +10 insight bonus on one attack roll, saving throw, skill check or caster-level check directly involving that sign.
The Night Road Opens (Su)
As an immediate action Nanna teleports himself or one willing creature within 120 feet up to 60 feet to a visible unoccupied space illuminated by moonlight or his divine radiance.
Domains — Pathfinder 1e
Knowledge · Law · Protection · Travel · Moon
Knowledge Domain
Lore Keeper (Sp): A successful touch attack reveals information as though Nanna had made the appropriate Knowledge check with a result equal to 15 + cleric level + Wisdom modifier.
Remote Viewing (Sp): From 6th level, use clairaudience/clairvoyance for a number of rounds per day equal to cleric level.
| 1 | comprehend languages |
| 2 | detect thoughts |
| 3 | speak with dead |
| 4 | divination |
| 5 | true seeing |
| 6 | find the path |
| 7 | legend lore |
| 8 | discern location |
| 9 | foresight |
Law Domain
Touch of Law (Sp): A willing creature touched treats all attack rolls, skill checks, ability checks and saving throws for 1 round as though the natural d20 result were 11. Uses/day: 3 + Wisdom modifier.
Staff of Order (Su): At 8th level, a touched weapon gains the axiomatic property for rounds equal to half cleric level.
| 1 | protection from chaos |
| 2 | align weapon (law only) |
| 3 | magic circle against chaos |
| 4 | order’s wrath |
| 5 | dispel chaos |
| 6 | hold monster |
| 7 | dictum |
| 8 | shield of law |
| 9 | summon monster IX (law spell only) |
Protection Domain
Resistant Touch (Sp): Nanna may transfer the domain’s resistance bonus to an ally for 1 minute.
Aura of Protection (Su): At 8th level, emit a 30-foot protective aura for rounds per day equal to cleric level, granting allies a deflection bonus to AC and elemental resistance.
| 1 | sanctuary |
| 2 | shield other |
| 3 | protection from energy |
| 4 | spell immunity |
| 5 | spell resistance |
| 6 | antimagic field |
| 7 | repulsion |
| 8 | mind blank |
| 9 | prismatic sphere |
Travel Domain
Granted Power: Base speed increases by 10 feet.
Agile Feet (Su): As a free action, ignore difficult terrain for 1 round. Uses/day: 3 + Wisdom modifier.
Dimensional Hop (Sp): At 8th level, teleport up to 10 feet per cleric level per day as a move action, used in 5-foot increments.
| 1 | longstrider |
| 2 | locate object |
| 3 | fly |
| 4 | dimension door |
| 5 | teleport |
| 6 | find the path |
| 7 | greater teleport |
| 8 | phase door |
| 9 | astral projection |
Moon Domain — SpiralWorlds
Eyes of the Moon (Su): Low-light vision. For rounds per day equal to Wisdom modifier, Nanna may perceive Invisible creatures within 30 feet as though affected by see invisibility.
Full Moon Revelation (Su): At 8th level, once per day create a 30-foot-radius field of silver light for 1 round per cleric level. Within it, the caster knows the squares occupied by Invisible creatures they can perceive and gains +4 sacred on Perception checks and saves to recognise or resist illusions. Twice/day at 16th level.
| 1 | faerie fire |
| 2 | augury |
| 3 | daylight |
| 4 | divination |
| 5 | scrying |
| 6 | true seeing |
| 7 | greater scrying |
| 8 | moment of prescience |
| 9 | foresight |
*CR 50 is a SpiralWorlds epic encounter estimate. D&D 3.5e does not provide a simple formula deriving a deity’s CR from divine rank and class levels.
Defense
AC 80, touch 51, flat-footed 70 (+10 Dex, +16 divine, +29 natural, +15 deflection)
hp 1,150 (50d8 maximised plus 750 Con)
Fort +58, Ref +53, Will +61
Damage Reduction 30/epic; Spell Resistance 68
Base divine SR is 32 + divine rank = 48. Nanna’s Increased Spell Resistance SDA adds +20, producing SR 68.
Divine Immunities ability damage, ability drain, mind-affecting effects, death effects, disease, energy drain, paralysis, petrification, poison, sleep, stunning and involuntary transmutation; rank-appropriate immunity to imprisonment and banishment effects
Statistics
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 38 (+14) | 30 (+10) | 40 (+15) | 34 (+12) | 46 (+18) | 40 (+15) |
Effective Attack Bonus +35 (+20 BAB plus +15 epic attack bonus); Grapple +65
Melee +5 axiomatic sickle +71/+66/+61/+56 (1d6+19 plus 2d6 against chaotic creatures)
Melee Touch +65; Ranged Touch +61
Skills
| Concentration | +84 |
|---|---|
| Knowledge (arcana) | +81 |
| Knowledge (history) | +81 |
| Knowledge (nature) | +81 |
| Knowledge (the planes) | +81 |
| Knowledge (religion) | +94 |
| Listen | +89 |
| Sense Motive | +90 |
| Spellcraft | +81 |
| Spot | +89 |
| Survival | +87 |
Feats
Alertness, Combat Casting, Combat Reflexes, Empower Spell, Extend Spell, Improved Initiative, Quicken Spell, Skill Focus (Knowledge [religion]), Skill Focus (Sense Motive), Spell Focus (Divination), Greater Spell Focus (Divination), Spell Penetration, Greater Spell Penetration, Weapon Focus (sickle), Epic Spellcasting, Superior Initiative, Epic Skill Focus (Knowledge [religion])
Epic Cleric Bonus Feats: Improved Spell Capacity ×3.
Divine Spellcasting
Nanna casts divine spells as a 30th-level cleric at caster level 30th. In addition, a deity can use any domain spell it grants as a spell-like ability at will at effective caster level 26th.
Representative magic includes augury, clairaudience/clairvoyance, commune, daylight, detect thoughts, discern location, divination, etherealness, foresight, freedom of movement, greater scrying, hallow, moment of prescience, plane shift, scrying, see invisibility, teleport, time stop, true seeing and zone of truth.
Domains — D&D 3.5e
Knowledge · Law · Protection · Travel · Time · Moon
Knowledge Domain
Granted Power: All Knowledge skills are cleric class skills. Divination spells are cast at +1 caster level.
| 1 | comprehend languages |
| 2 | detect thoughts |
| 3 | speak with dead |
| 4 | divination |
| 5 | true seeing |
| 6 | find the path |
| 7 | legend lore |
| 8 | discern location |
| 9 | foresight |
Law Domain
Granted Power: Law spells are cast at +1 caster level.
| 1 | protection from chaos |
| 2 | calm emotions |
| 3 | magic circle against chaos |
| 4 | order’s wrath |
| 5 | dispel chaos |
| 6 | hold monster |
| 7 | dictum |
| 8 | shield of law |
| 9 | summon monster IX (law spell only) |
Protection Domain
Granted Power: Once per day, grant a creature a resistance bonus on its next saving throw equal to cleric level.
| 1 | sanctuary |
| 2 | shield other |
| 3 | protection from energy |
| 4 | spell immunity |
| 5 | spell resistance |
| 6 | antimagic field |
| 7 | repulsion |
| 8 | mind blank |
| 9 | prismatic sphere |
Travel Domain
Granted Power: For a total number of rounds per day equal to cleric level, act normally despite magical effects that impede movement as though affected by freedom of movement. Survival becomes a cleric class skill.
| 1 | longstrider |
| 2 | locate object |
| 3 | fly |
| 4 | dimension door |
| 5 | teleport |
| 6 | find the path |
| 7 | greater teleport |
| 8 | phase door |
| 9 | astral projection |
Time Domain — SpiralWorlds Legacy Domain
Granted Power: Improved Initiative as a bonus feat.
| 1 | true strike |
| 2 | gentle repose |
| 3 | haste |
| 4 | freedom of movement |
| 5 | permanency |
| 6 | contingency |
| 7 | moment of prescience |
| 8 | foresight |
| 9 | time stop |
Moon Domain — SpiralWorlds
Granted Power — Eyes of the Moon: Knowledge (the planes) is a cleric class skill. Once per day, gain a +2 sacred bonus on one Initiative check, divination caster-level check or saving throw against an illusion.
| 1 | faerie fire |
| 2 | augury |
| 3 | daylight |
| 4 | divination |
| 5 | scrying |
| 6 | true seeing |
| 7 | greater scrying |
| 8 | moment of prescience |
| 9 | foresight |
Salient Divine Abilities
Nanna possesses twenty-one salient divine abilities.
- Alter Reality
- Automatic Metamagic — Quicken Spell
- Avatar
- Clearsight
- Divine Fast Healing
- Rejuvenation
- Divine Recall
- Divine Shield
- Area Divine Shield
- Divine Spellcasting
- Divine Spell Focus — Divination
- Extra Sense Enhancement
- Know Secrets
- Supreme Initiative
- Stride
- Increased Spell Resistance
- Full Moon Revelation
- Measure the Appointed Hour
- Thirtyfold Reckoning
- The Night Road Opens
- Tablet of the Moon’s Course
Full Moon Revelation
Nanna may fill a region with clear lunar illumination. Within the affected area he perceives Invisible creatures, magical disguises, hidden magical writing and illusions as though using true seeing.
Measure the Appointed Hour
Nanna may alter the Initiative position of a non-divine creature within his sensory range. A Will save negates. This ability cannot grant additional turns.
Thirtyfold Reckoning
Once each round Nanna may designate a visible event as one of thirty foretold signs. Until the beginning of his next turn he gains a +16 divine bonus on one opposed roll, saving throw or check directly connected with that event.
The Night Road Opens
Nanna and willing creatures travelling under natural moonlight may cross enormous distances without error. On the same plane the effect functions like greater teleport; across planar boundaries it functions like plane shift.
Tablet of the Moon’s Course
Nanna automatically knows the lunar phase, calendar date and relevant celestial positions associated with any place he can perceive, and recognises attempts to falsify celestial observation or sacred reckoning.
Portfolio Sense
Nanna senses major events involving the moon, lunar calendars, great celestial omens, significant divinations performed in his name and deliberate corruption of sacred reckoning within the normal range of a Greater Deity’s portfolio sense.
The Measurer of the Night
Nanna is the great Sumerian moon god. In Akkadian tradition his name appears as Suen or Sîn. SpiralWorlds treats these forms as names of the same enduring divine power rather than as separate gods. Ašimbabbar is among the ancient names associated with him.
The visible moon is Nanna’s greatest celestial sign, but it is not his home plane. Every crescent, full moon and dark moon marks the progress of an ordered cycle. Through that cycle Nanna governs the reckoning of months, the interpretation of celestial signs, the timing of journeys and rites, the fertility of herds and the recurrence upon which mortal societies build calendars.
His power is quieter than thunder and less overwhelming to mortal eyes than the sun, but it is no less fundamental. Kings date proclamations by his cycles. Priests calculate festivals by them. Herdsmen watch the same light as caravan masters, astrologers, navigators and night guards.
Divine Portfolio
- The moon and lunar phases
- Months, calendars and sacred time
- Omens and divination
- Wisdom through accurate observation
- Night travel and safe roads
- Cattle, herds and pastoral abundance
- Fertility and cyclical renewal
- Royal signs and auspicious dates
Signs of His Presence
- A perfect crescent appearing through cloud
- Moonlight falling where no opening exists
- A bull remaining calm amid supernatural danger
- A disputed calculation resolving on the thirtieth mark
- A hidden inscription becoming legible by moonlight
- An omen repeating on successive nights
- A road or river gleaming silver toward the correct destination
Divine Nature and Manifestations
Nanna rarely manifests as a raging destroyer. His presence arrives as certainty: a chamber flooded by impossible moonlight, a shadow falling at the predicted instant, a bull refusing to cross a cursed threshold or a calculation suddenly revealing that an accepted calendar is wrong.
The Crescent
The young moon represents emergence, promise and the first reliable mark after darkness. Priests often begin journeys, contracts and new cycles beneath the returning crescent.
The Full Moon
Fullness is revelation. Hidden travellers, false records, secret paths and things deliberately kept from sight become vulnerable to Nanna’s attention.
The Dark Moon
The unseen moon is not absence. It is withheld knowledge, transition and the brief interval before the next visible measure appears.
Appearance
Nanna appears as a mature Mesopotamian god and king: bearded, dignified, crowned with divine horns and richly robed rather than dressed as a modern fantasy wizard. A luminous crescent hangs above or behind him. His garments carry lapis, silver and gold details, while the polished head of his staff may reflect a moon that does not match the moon visible in the sky.
Bull imagery accompanies him frequently. The horns of the bull and the horns of the lunar crescent answer one another visually, expressing strength, fertility and the curved shape of the young moon.
Favoured Weapon
Nanna’s favoured weapon is the sickle, whose curved blade echoes the crescent. His direct manifestations may instead carry a ceremonial scepter when appearing as the enthroned Moon-King.
Mythology
Son of Enlil and Ninlil
In the central Sumerian tradition, Nanna is the son of Enlil and Ninlil. His genealogy places the moon within an ordered succession of divine authority rather than making him the son of Anu.
His consort is Ningal. Their children include Utu/Shamash, the solar god, and Inanna/Ishtar in a major ancient genealogical tradition.
Mesopotamian genealogies vary between cities, periods and surviving texts. The relationships used here establish the principal tradition followed by SpiralWorlds without implying that every ancient source preserved an identical divine family tree.
Nanna-Suen’s Journey to Nippur
One of Nanna’s richest surviving literary traditions concerns his journey from Ur toward Nippur. He prepares a magnificent sacred barge and carries abundant offerings through the landscape of the Two Rivers toward the city of his parents, Enlil and Ninlil.
The story gives Nanna a character far more distinctive than a generic moon personification. He is a divine son travelling by river, bearing cattle and produce, approaching quays and gates, participating in a world where abundance, sacred order and divine family relationships are expressed through the journey itself.
In SpiralWorlds, the ancient voyage is echoed whenever Nanna’s celestial barge appears upon a mortal river beneath moonlight. Such an appearance is never random. It means a divine obligation is moving from city to city.
The Thirtyfold Measure
The number 30 belongs closely to Nanna/Sin and the idealised reckoning of the lunar month. His temples repeat the number in ritual counting, astronomical tables, magical correspondences and architectural design.
Divine Relationships
Nanna approaches Enlil as a divine son whose authority is rooted in one of the oldest centres of Mesopotamian sacred order.
Ninlil belongs at the centre of Nanna’s genealogy and divine family.
Ningal is Nanna’s wife and a major part of his cultic identity at Ur.
Nanna measures the night; Utu illuminates the day and brings things into the open. Their portfolios overlap in revelation without becoming identical.
Inanna’s star, passion, sovereignty and warlike power contrast with Nanna’s measured lunar order.
Nanna opposes powers and mortals that deliberately corrupt sacred reckoning, falsify omens, destroy lawful routes, attack protected travellers or manufacture celestial signs to create false political legitimacy.
Celestial Ur and the Divine Cities of the Two Rivers
Nanna’s divine home is not the physical moon. His realm stands within Buxenus, the deeper region of Arcadia, among the Divine Cities of the Two Rivers.
Along the celestial Idiqlat and Purattu rise divine continuations of the great Mesopotamian sacred cities. Ur is among them.
Celestial Ur
Celestial Ur is a city of moonlit brick, processional roads, quays, irrigated gardens, cattle yards, archives and rooftop observatories. Its night is never wholly dark. Canal water reflects a changing crescent even when the sky appears empty, while temple scribes continually compare earthly and celestial calendars.
Ekišnugal
At Celestial Ur’s sacred centre stands Ekišnugal, the celestial continuation of Nanna’s great sanctuary at mortal Ur. The temple is both palace and instrument. Its courtyards align with significant celestial events, its gates admit processions at appointed hours and its highest terraces overlook the ordered waterways of Buxenus.
The Moon Is His Sign, Not His Plane
The physical moon remains one of Nanna’s most powerful connections to the Material Plane. Its cycles carry his signs, empower rites and help establish roads between distant places. A lunar manifestation does not mean that Nanna literally inhabits the astronomical moon as though it were an Outer Plane.
Reaching Celestial Ur
Travellers may reach the city through a recognised procession, a restored temple gate, a moonlit river journey, an ancient sacred tablet, a divine summons or an Arcadian route entering Buxenus through the Divine Cities.
Visitors rarely arrive inside Ekišnugal itself. They reach a quay, gate or processional road and must establish their identity, purpose and the authority under which they seek entry.
See also the wider Planes of SpiralWorlds.
Worship, Temples and Priesthood
Ur
Ur is Nanna’s great Sumerian cult centre. Its association with the moon god is so strong that rites performed there may resonate with Celestial Ur more readily than rites undertaken in places without an inherited connection to his cult.
Harran
Harran became another major centre of the moon god under his Akkadian name Sîn. Its long lunar tradition makes it particularly significant to astrologers, caravan travellers and scholars interested in the survival of ancient religious practice through successive kingdoms and empires.
Priests
- Astronomer-priests observe and record lunar phenomena.
- Calendar keepers establish ritual dates and reconcile competing systems of reckoning.
- Diviners interpret celestial and terrestrial omens.
- Temple scribes maintain offerings, contracts and sacred records.
- Herd officials supervise cattle belonging to temple estates.
- Night-road priests bless travellers, caravans and river journeys.
- Court astrologers judge auspicious dates and dangerous signs surrounding rulers.
Characters devoted to the systematic reading of celestial signs may also encounter the Master Astrologer tradition.
Offerings
Offerings favour abundance, temple economy and the sacred journey: cattle, sheep, grain, reeds, oil, beer, cakes, dates and other produce. A carefully copied astronomical table may be as valuable as a costly object if it corrects an error that would otherwise corrupt sacred reckoning.
Sacred Practices
- Observing the first visible crescent.
- Maintaining accurate calendars.
- Recording unusual celestial events without alteration.
- Blessing journeys begun at night.
- Protecting observatories, archives and temple records.
- Comparing predicted celestial events with what actually occurs.
- Correcting a false omen even when a ruler would prefer the lie.
Taboos
- Knowingly falsifying an astronomical observation.
- Changing an omen record to flatter a ruler.
- Corrupting weights, measures or sacred calendars for profit.
- Attacking travellers who have received lawful sanctuary.
- Using illusion to manufacture a false celestial sign.
- Destroying a record because its prediction became politically inconvenient.
Nanna/Sin in 1454
In the SpiralWorlds campaign present of 1454 CE, Nanna remains an active divine power. He is not merely a memory of antiquity. The moon still moves, months must still be reckoned, rulers still fear omens and travellers still depend upon the night sky.
His influence is strongest wherever people calculate time from celestial cycles, preserve inherited astronomical records, drive caravans after sunset, maintain great herds or seek divine meaning in the heavens.
Natural Philosophy and Lunar Learning
Among educated scholars, celestial observation belongs to the learned study of the natural world. Arithmetic, geometry, astronomy, astrology, calendars and magical correspondence overlap rather than belonging to separate modern categories.
A scholar can compare eclipse tables, calculate conjunctions, investigate the magical qualities of lunar light and consult ancient omen records as parts of the same intellectual problem.
Courts and Omen Politics
Rulers have practical reasons to care what Nanna’s servants say. An unfavourable eclipse interpretation can weaken confidence in a campaign, coronation, treaty or succession. A favourable interpretation can be politically priceless.
This makes professional diviners vulnerable to pressure. Some courts bribe, threaten or imprison astrologers until the heavens appear to say what a ruler wants. Nanna treats deliberate falsification far more severely than an honest mistake.
Caravans and the Night Road
Across dry country, long roads and dangerous frontiers, moonlight can turn a deadly journey into a manageable one. Caravan masters who honour Nanna value accurate timing, reliable guides and priests able to recognise when a promising night carries the wrong omen.
Ancient Tablets
Old astronomical tablets are not antiquarian curiosities in a world where the gods they describe are real. A fragment recovered from a ruined archive may preserve a cycle still in operation, a warning never fulfilled, or the record of a celestial event that should have occurred but did not.
Divine Favour, Omens and Curses
Signs of Favour
- A cloud bank parts exactly when an observation must be made.
- A traveller finds the correct road silvered by moonlight.
- An impossible calculation resolves after thirty attempts.
- A hidden forgery becomes obvious beneath lunar light.
- A herd remains calm during supernatural danger.
- An omen repeats clearly enough that rival interpreters finally agree.
Signs of Displeasure
- A carefully maintained lunar instrument gives contradictory readings.
- A false crescent appears in polished metal.
- Every clock or water measure loses the same interval.
- Cattle refuse to enter a sacred enclosure.
- An astrologer’s ink fades only from the lines containing a lie.
- A traveller walks all night and reaches the place where the journey began.
Lunar Eclipses
A lunar eclipse is an omen event. Nanna’s priests observe eclipses with disciplined attention, timing each stage, comparing the event with earlier records and determining whether the omen concerns a ruler, city, harvest, war or wider cosmic disturbance.
Boon of the Night Road
A favoured traveller always knows true north while the moon is visible and cannot become lost through ordinary navigational error at night.
Boon of the Crescent Eye
The devotee becomes unusually difficult to deceive through darkness or invisibility. In 5.5e this grants Advantage on checks to locate Invisible or magically concealed creatures once some sign of their presence is detected. In PF1e/3.5e it grants a +4 sacred bonus on the equivalent Perception, Spot or Sense Motive checks.
Curse of the False Omen
A diviner who knowingly falsifies a celestial omen for wealth or political favour may find every subsequent prediction haunted by the deliberate lie until the wrong is corrected.
Using Nanna/Sin in a Campaign
Nanna is strongest in play when the adventure depends on observation, timing and the consequences of reading a sign incorrectly.
The Missing Day
Independent calendars from distant cities suddenly disagree with the heavens by exactly one day. Someone has removed a day from sacred reckoning.
The Eclipse King
A coming lunar eclipse predicts the death or removal of a ruler. Three courts produce three incompatible readings from supposedly identical tablets.
The Barge That Travels at Night
A magnificent reed barge appears upon a mortal river beneath the moon, collecting offerings whose original purpose has been forgotten.
Thirty Tablets
An archive contains thirty numbered lunar tablets. Twenty-nine agree. The thirtieth predicts an impossible celestial event.
The False Moon
Travellers begin seeing a second crescent low on the horizon. Nanna’s priests declare that it is neither the natural moon nor one of their god’s signs.
The Closed Quay of Celestial Ur
Travellers carrying legitimate divine safe-conduct reach Buxenus only to find the quay of Celestial Ur sealed because someone has altered the calendar on one side of the planar boundary.
Historical and Mythic Context
Nanna is the Sumerian moon god. The Akkadian forms Suen and Sîn belong to the same long-lived Mesopotamian divine tradition. His principal cult centre in Sumer was Ur, while Harran became another exceptionally important centre of Sîn’s worship.
Ningal is his consort. Utu, later known as Shamash, belongs among their children, while Inanna/Ishtar is also their daughter in a major Mesopotamian genealogical tradition.
Ancient art strongly associates the moon god with the crescent. Bull symbolism also belongs to his divine imagery, reinforcing the visual relationship between the horns of the animal and the horns of the crescent moon.
The Sumerian literary composition conventionally known as Nanna-Suen’s Journey to Nibru or Nanna-Suen’s Journey to Nippur describes Nanna preparing a sacred barge, carrying abundant offerings and travelling toward the city of Enlil and Ninlil.
Sources and Further Reading
Video: Nanna/Sin, Lord of the Moon
This mythology overview provides additional background on Nanna/Sin. SpiralWorlds cosmology and game statistics remain setting-specific.
Nanna/Sin FAQ
Are Nanna and Sin the same god?
Yes. Nanna is the familiar Sumerian name of the Mesopotamian moon god. Suen and Sîn are Akkadian forms.
Is Nanna/Sin male or female?
Nanna/Sin is a male Mesopotamian deity.
Who are Nanna/Sin’s parents?
In the principal Sumerian tradition followed here, Nanna is the son of Enlil and Ninlil.
Who is Nanna/Sin’s wife?
His consort is Ningal, a goddess closely connected with his cult at Ur.
Are Utu and Inanna children of Nanna?
Utu/Shamash is traditionally the son of Nanna and Ningal. Inanna/Ishtar is also their daughter in a major Mesopotamian genealogical tradition.
Does Nanna/Sin live on the Moon?
Not in SpiralWorlds cosmology. The physical moon is his celestial sign. His divine realm is Celestial Ur in Buxenus on Arcadia.
What are Nanna/Sin’s main domains?
His central themes are the moon, sacred time, calendars, celestial omens, divination, wisdom, night travel, protection and lawful reckoning. Exact domain packages differ by edition in the mechanics tabs above.
What is Nanna/Sin’s sacred number?
Thirty, reflecting the traditional idealised reckoning of the lunar month.