|Hurls an exploding ball of negative energy which drains any living creature it engulfs.|
Ghostly Fireball is a monster-only spell which behaves much like the Fireball spell, dealing heavy, unavoidable damage to everything caught in its 3×3 blast radius. Unlike Fireball, however, it deals partially-irresistible negative energy damage, ignores half of its victim's AC, and heals any undead affected by it.
The following enemies cast Ghostly Fireball:
Ghostly Fireball was added in 0.13.