Chickens' Revenge

You summon a flock of angry chickens to enact their vengeance upon one creature you can see within range. The target must succeed on a Dexterity saving throw, taking 8d6 piercing damage on a failed save, and half as much damage on a successful one. On a failed save, the chickens continue to attack the target, moving with it as long as it stays within range. For the spell's duration, the creature is considered heavily obscured. At the end of each of its turns, the target repeats the saving throw. It takes 4d6 piercing damage on a failed save, and the spell ends on a successful one.