Tiamat

Gargantuan fiend (dragon), lawful evil
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Armor Class 25 (natural)
Hit Points 900 (30d20 + 300)
Speed 60 ft., fly 120 ft.
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STR 30 (+10) DEX 10 (+0) CON 30 (+10) INT 26 (+8) WIS 26 (+8) CHA 28 (+9)
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Saves Str +19, Dex +9, Wis +17
Skills Arcana +17, Perception +26, Religion +17
Damage Immunities acid, cold, fire, lightning, poison; bludgeoning, piercing, and slashing from nonmagical weapons.
Condition Immunities blinded, charmed, deafened, frightened, poisoned, stunned
Senses darkvision 240 ft., truesight 120 ft., passive Perception 36
Languages Common, Draconic, Infernal
Treasure Hoard
Challenge 30 (155,000 XP)

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Discorporation. When Tiamat drops to 0 hit points or dies, her body is destroyed but her essence travels back to her domain in the Nine Hells, and she is unable to take physical form for a time.

Innate Spellcasting. Tiamat’s spellcasting ability is Charisma (spell save DC 26). She can innately cast the following spells as 9th level spells, requiring no material components:
At will: shapechange
3/day each: divine word, plane shift, teleport
1/day each: power word kill, power word stun, wish

Legendary Resistance (5/Day). If Tiamat fails a saving throw, she can choose to succeed instead.

Limited Magic Immunity. Unless she wishes to be affected, Tiamat is immune to spells of 6th level or lower. She has advantage on saving throws against all other spells and magical effects.

Magic Weapons. Tiamat’s weapon attacks are magical.

Multiple Heads. Tiamat can take one reaction per turn, rather than only one per round. She also has advantage on saving throws against being knocked unconscious. If she fails a saving throw against an effect that would stun a creature, one of her unspent legendary actions is spent.

Regeneration. Tiamat regains 30 hit points at the start of her turn.

ACTIONS
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Multiattack. Tiamat can use her Frightful Presence. She then makes three attacks: two with her claws and one with her tail.

Claw. Melee Weapon Attack: +19 to hit, reach 15 ft., one target. Hit: 24 (4d6 + 10) slashing damage.

Tail. Melee Weapon Attack: +19 to hit, reach 25 ft., one target. Hit: 28 (4d8 + 10) piercing damage. The target must make a DC 27 Constitution saving throw, taking 72 (21d6) poison damage on a failed save, or half as much damage on a successful one.

Frightful Presence. Each creature of Tiamat’s choice that is within 240 feet of Tiamat and aware of her must succeed on a DC 26 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature’s saving throw is successful or the effect ends for it, the creature is immune to Tiamat’s Frightful Presence for the next 24 hours.

LEGENDARY ACTIONS
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Tiamat can take 5 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. Tiamat regains spent legendary actions at the start of her turn. Tiamat can only take one legendary action per head per turn.

Bite. Melee Weapon Attack: +19 to hit, reach 20 ft., one target. Hit: 32 (4d10 + 10) slashing damage plus 14 (4d6) acid damage (black dragon head), lightning damage (blue dragon head), poison damage (green dragon head), fire damage (red dragon head), or cold damage (white dragon head).

Black Dragon Head: Acid Breath (Costs 2 Actions). Tiamat breathes acid in a 120-foot line that is 10 feet wide. Each creature in that line must make a DC 27 Dexterity saving throw, taking 91 (26d6) acid damage on a failed save, or half as much damage on a successful one.

Blue Dragon Head: Lightning Breath (Costs 2 Actions). Tiamat breathes lightning in a 120-foot line that is 10 feet wide. Each creature in that line must make a DC 27 Dexterity saving throw, taking 143 (26d10) lightning damage on a failed save, or half as much damage on a successful one.

Green Dragon Head: Poison Breath (Costs 2 Actions). Tiamat breathes poisonous gas in a 90-foot cone. Each creature in that area must make a DC 27 Constitution saving throw, taking 117 (26d8) poison damage on a failed save, or half as much damage on a successful one.

Red Dragon Head: Fire Breath (Costs 2 Actions). Tiamat breathes fire in a 90-foot cone. Each creature in that area must make a DC 27 Dexterity saving throw, taking 169 (26d12) fire damage on a failed save, or half as much damage on a successful one.

White Dragon Head: Cold Breath (Costs 2 Actions). Tiamat breathes an icy blast in a 90-foot cone. Each creature in that area must make a DC 27 Constitution saving throw, taking 65 (26d4) cold damage on a failed save, or half as much damage on a successful one.

Originally Posted by Kain Darkwind of the Dicefreaks forums.

On this Thread

Tiamat
Colossal+ Dragon (Cosmic, Evil, Lawful)
Hit Dice	69d12 + 1104 (1,932 hp)
Initiative	+0
Speed	90 ft., fly 400 ft. (good), Swim 90 ft.
Armor Class	102 (+17 deflection, +15 insight, +68 natural, -8 size), touch 34, flat-footed 87
Base Attack/Grapple	+69/+107
Attack	5 bites +83 melee (6d8 + 22)
Full Attack	5 bites +83 melee (6d8 + 22) and 2 wings +77 melee (4d8 + 11) and tail sting +77 melee (6d6 + 33 plus poison)
Space/Reach	60 ft. /60 ft.
Special Attacks	Breath weapons, crush, frightful presence, improved snatch, poison, spells, spell-like abilities, tail sweep
Special Qualities	Alternate form, Blindsense 1400 ft, damage reduction 35/greater epic, good and mithril, Darkvision, immune to acid cold, electricity and fire, magical sleep, Paralysis and poison, multiple heads, Low-Light Vision, regeneration 20, resistance to sonic 30, see invisibility 1400 ft., Spell Resistance 60, water breathing
Saves	Fort +52, Ref +36, Will +57
Abilities	Strength 55, Dexterity 10, Constitution 43, Intelligence 42, Wisdom 40, Charisma 45
Skills	Appraise +88, Bluff +89, Concentration +88, Diplomacy +79, Disguise +89 (+97 acting), Escape Artist +40, Gather Information +89, Handle Animal +62, Heal +63, Hide +64, Intimidate +97, Knowledge (Arcana) +86, Knowledge (history) +81, Knowledge (nobility) +76, Knowledge (nature) +81, Knowledge (the planes) +81, Knowledge (religion) +86, Listen +88, Move Silently +72, Search +56, Sense Motive +87, Spellcraft +96, Spot +87, Survival +55 (+63 above ground, +63 planes, +59 tracking), Swim +92
Feats	Cleave, Clinging Breath, Corrupt Breath, Dark Speech, Empower Spell, Enlarge Breath, Expedious Metamagic, Extend Spell, Fly-by Attack, Great Cleave, Hover, Improved Snatch, Iron Will, Lingering Breath, Power Attack, Quicken Spell, Recover Breath, Shape Breath, Snatch, Snatch and Swallow, Violate Breath, Wingover
Epic Feats	Epic Spellcasting, Epic Will
Climate/Terrain	Avernus, First of the Nine Hells
Organization	Solitary (unique)
Challenge Rating	50
Treasure	Quintuple Standard
Alignment	Lawful Evil

Breath Weapon (Ex): Tiamat possesses five different breath weapons, one for each head. Not including metabreath effects, Tiamat must wait 1d4-1 rounds between using the breath weapon of a particular head again.

• Black: 35d4 points of acid damage. 200 ft. line. (Fortitude DC 60 half)
• Blue: 35d8 points of electricity damage. 200 ft. line. (Reflex DC 60 half)
• Green: 35d6 points of acid damage. 100 ft. cone. (Fortitude DC 60 half)
• Red: 35d10 points of fire damage. 100 ft. cone. (Reflex DC 60 half)
• White: 17d6 points of cold damage. 100 ft. cone. (Reflex DC 60 half)

Crush (Ex): Area 60 ft. x 60 ft.; Huge or smaller opponents take 6d8 + 33 points of bludgeoning damage, and must succeed on a DC 60 reflex save or be pinned.

Frightful Presence (Ex): 500 ft. radius, 68 HD or less (17 HD or less panicked), 18d6 rounds, Will DC 61 negates.

Poison (Ex): Injury, Fortitude DC 60 negates. 5d6 Constitution initial/5d6 Constitution secondary.

Snatch (Ex): Against Gargantuan or smaller creatures, bite (6d8 + 22)/round.

Spells: Tiamat casts spells as a sorcerer and cleric with the Destruction, Dragon, Evil, Greed, Hatred and Law domains.

• Cleric spells per day 6/10/10/10/9/9/8/8/7/7; Caster level 40th, DC 25+spell level
• Sorcerer spells per day 6/11/10/10/10/10/9/9/9/9; Caster level 40th, DC 27+spell level
• Epic Spells: 7

Spell-like Abilities: Always active – detect chaos, detect good, Detect Magic, detect scrying;

At will – charm monster (DC 32), command plants (DC 31), control weather, corrupt water, Create Water, darkness, destroy water (DC 61), discern location, dispelling breath, dominate monster (DC 36), find the path, fog cloud, greater teleport, gust of wind, Insect Plague, locate object, maddening whispers (DC 35), mesmerizing glare (DC 30), mirage arcana (DC 32), plant growth, suggestion (DC 30), veil (DC 33), ventriloquism (DC 28), wall of ice;

5/day – blinding breath (DC 31), stunning breath (DC 32);

1/day – breath admixture (DC 35), enervating breath (DC 36), gate.

Caster level 55th

Tail Sweep (Ex): Half circle 120 ft. in diameter; Large or smaller opponents take 4d8+33 points of bludgeoning damage and are knocked prone, Reflex DC 60 halves damage and negates being knocked prone.

Alternate Form (Ex): Tiamat can take a new form as a move-equivalent action. Tiamat retains all her extraordinary, supernatural and spell-like abilities in her new form, and takes on only the appearance of the form. If Tiamat takes on a form of a different size, she takes a -4 penalty to Strength for every size she is under Colossal, otherwise her statistics remain the same.

Cosmic Entity: Tiamat has a +10 bonus on rank checks.

Dragon God: Tiamat may duplicate the effects of any her domain’s spells as a swift supernatural action. (DC 71)

Multiple Heads (Ex): Tiamat may make a standard action with each of her heads every turn. This includes using a breath weapon or spell-like ability. Tiamat can cast one spell each round, which counts as a standard action for one of her heads.

Regeneration (Ex): Epic good aligned weapons deal Tiamat lethal damage.

Water Breathing (Ex): Tiamat can breath under water normally. Her breath weapons function normally underwater.

Liber Mysterium
The Netbook of Witches and Warlocks

By Timothy S. Brannan and The Netbook of Witches and Warlocks Team
Full netbook can be found on the followng website

Dom of D20 / D&D 3e Netbooks and Downloads.

Tiamat is the great creation Goddess of water and chaos to the Sumerians. She gave birth to all of the Sumerian (Babylonian) gods and ruled them all, until the god Marduk defeated her. He used Her body to create the sky and earth. She was described as a great dragon or a being of chaos. Like so many other destructive Goddesses, Tiamat is a Goddess of creation. It is believed by the Sumerians that she created the world. In Babylonian myths, Tiamat is a huge, bloated female dragon that personifies the saltwater ocean, the water of Chaos. She is also the primordial mother of all that exists, including the gods themselves.

The Cult of Tiamat is extremely far reaching. The primary duties of her witches are to venerate Tiamat and destruction in any way they can and to spread the word of the cult. Often “spreading the word” implies random acts of violence and attributing them to Tiamat herself. It is her capacity as the dark Goddess of chaos and creation that attracts so many witches to her cult.

Her witches tend to belong to the Malific or dark Tantric Traditions.

Alignment: CE

Areas of Influence: Chaos, Creation, Dragons, Water