No Light

(Book of Vile Darkness, DnD 3.0)

Transmutation

Level: ; Bard 1; Cleric 0; Sorcerer/Wizard 0
Components: V, S
Casting Time: 1 action
Range: Close (25 ft. + 5 ft./2 levels)
Area: 20-ft.-radius spread
Duration: 1 minute/level
Saving Throw: None
Spell Resistance: No

The caster creates an area of darkness.
Normal light sources cannot illuminate the area, but darkvision allows a creature to see within the area.
Light counters no light (and vice versa), leaving whatever light conditions normally prevail in the overlapping areas of the spells.
Higher-level light spells counter and dispel no light.