Blood Puppet

You harness the powers of hemomancy to control the blood of a creature within range. The target creature must make a Constitution saving throw. Creatures without blood like constructs and oozes aren’t affected. A creature takes 8d8 necrotic damage on a failed save and must choose to either have the blood pulled from its body, taking another 8d8 piercing damage, or immediately take their turn following yours. On their turn, they must do exactly as you command, similar to the Dominate Person spell. After this turn, the target returns to their usual initiative order on the following round.

On a successful save, the target takes 8d8 necrotic damage and suffers no other effects.