Dispel evil

From Wormhole Sci-Fi MUD Homepage

Usage           : psi 'dispel evil' <victim>
Damage          : Explained below.
Cost            : 30
Save            : none
Duration        : instant

This spell, when cast, will do 6d16 hitpoints damage, but not necessarily
all of the time. If the caster is evil, the caster will receive damage, a
LOT of damage. Damage will be done to a opponent only if the opponent is evil.