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3.5 ed. rules
Celestial brilliance is an evocation spell that conjures a blaze of celestial light from an object.
The object touched sheds light brighter than bright sunlight, channeled directly from the celestial realms. The light extends to a 120-foot radius: bright light to 60 feet and dim light in another 60 feet.
Creatures with light sensitivity (such as drow) take twice the usual penalty when they are within 60 feet of the object. Undead creatures take damage each round they are within the bright light. Fiends, as well as undead creatures that are specifically harmed by sunlight, take even more damage.
Celestial brilliance brought into an area of magical darkness (or vice versa) is temporarily negated, so that the otherwise prevailing light conditions exist in the overlapping areas of effect.