Defile Healing

Defile Healing is a 7th-level necromancy available to Cleric, Warlock.

You attempt to reverse the energy of a healing spell so that it deals damage instead of healing. If the healing spell is being cast with a spell slot of 5th level or lower, the slot is expended but the spell restores no hit points. In addition, each creature that was targeted by the healing spell takes necrotic damage equal to the healing it would have received, or half as much damage with a successful Constitution saving throw.

Mechanics

level:: 7
range:: 60 feet
ritual:: false
school:: necromancy
classes:: Cleric, Warlock
duration:: Instantaneous
casting time:: 1 reaction, which you take when you see a creature cast a healing spell
concentration:: false