Dispel evil

The priest using the dispel evil spell causes a summoned creature of evil nature, an evil creature from another plane, or a creature summoned by an evil caster, to return to its own plane or place when the caster successfully strikes it in melee combat. Evil enchantments (such as a charm spell cast by an evil creature) can be often also be dispelled by the dispel evil spell. In addition to driving away evil, extraplanar and summoned creatures, this spell counters evil enchantment/charm spells and all forms of magical domination and possession.

There is a reversed form of this spell, called dispel good, which affects good creatures in the same manner this spell affects evil ones.

Note: This spell originally appeared in the 2nd Edition Player's Handbook for Advanced Dungeons & Dragons from TSR. Its use here is for the purposes of providing context for the campaign only.