Elmar's Spiteful Grudge

This spell is a part of The Magistry's Sacred Magic. Sacred Magics have their own specific rules compared to normal spells.

It is important to read The Magistry's Sacred Magic tab.

Your touch magically allows the spirit of hate and spite to a creature of your choice. When that creature drops to 0 hit points from taking damage from a creature, it may delay falling unconscious and take an action that would harm its attacker. After this effect triggers, the spell ends and the creature falls unconscious if they remain at 0 hit points.