Blood Wound

You make the blood of all enemies within 25 foot of you boil in their veins, causing excruciating pain. All targets take 1d6 necrotic damage and must succeed a Constitution saving throw. On a failed save they can only take a bonus action on their next turn.

If the target does not have blood the spell fails. if the target has a blood like substance (such as tree sap) they are effected.