Curse of the Sentient Statue, created by Xar Greyhawk

Through the use of this spell, the caster can petrify a victim, while still maintaining that victim's consciousness within the stone body. In short, the victim petrifies while his or her brain does not ( and continues to survive even if deprived of food, water or air ). The victim's mind, while trapped, cannot control the body in any way, and can be contacted through telepathy only. For every month which passes, the victim must roll an Int check or lose 1d2 Intelligence points and acquire a mental alienation ( of the DM's choice ). When the victim has no more Intelligence points ( Int 0 ) he/she doesn't die, but goes permanently insane. If he/she is returned to normal before this happens, the victim "regenerates" 1 Int point per month of rest. The curse can be dispelled only through the use of a Wish, Remove curse, or through a Dispel Evil spell cast by a spellcaster whose level must be at least 20.

Indeed, this is a nasty spell . . Call me morbid, but for some reason, it just makes me chuckle and gaze wistfully at the birdbaths in my yard.