Astromancy (General, Magical)

Spells increase or decrease in power based on certain celestial events.

Liber Mysterium

The Netbook of Witches and Warlocks

By Timothy S. Brannan and The Netbook of Witches and Warlocks Team

Prerequisite: Knowledge Astrology: 5 Ranks, Spellcaster

Benefit: Depending on the frequency of the celestial event, the witch’s powers increase. However, this ability has a downside; for the opposite incursion, the caster may suffer a penalty.

Event	Effect
Event happens daily (sun up, sun down)	+1 to DC of saving throws
Event occurs monthly (full moon, new moon)	+2 to DC of saving throws, +1 to each die modifier.
Event occurs roughly annually (solar/lunar equinox, lunar eclipse)	+4 to DC of saving throws, +2 to die modifier, spells cast as quickened (casting times doubled on opposed time)
Event occurs less than once a year (solar eclipse)	Saving Throw DC +8, cast as quickened, empowered. (casting time doubled, cast as caster level –1d4)
Event occurs extremely rarely, but lasts for more than a day (comet visible, planet in particular constellation)	AC gains a +2 bonus, Initiative +2, and 1 ability store gains +2 bonus.

The opposite times (when the caster will be less powerful) are listed below.

Astromancy Frequency Chart
Event	Opposed by	Frequency
Daytime	Nighttime	Very Common
Full moon	New Moon	Common
Equinox or Solstice	Cross Quarter day	Uncommon (4 times per year)
Lunar Eclipse	Morning After Eclipse	Rare
Solar Eclipse	Day After Eclipse	Very Rare
Comet	Week after Comet disappears	Very Rare
Planet in Constellation	Planet found in opposing Constellation	Extremely Rare