Blood slave

One of the most feared powers available to blood mages, this spell allows you to take control of an enemy's body, unless they make a successful wisdom saving throw.  If the subject fails, you may dictate the action they take on their next turn. The subject may attempt a saving throw at the end if each turn. If the target eventually succeeds and the spell ends, all attacks on this target gain a +2 do to their sluggish movements as they regain control of themselves.

If the target does not have blood the spell fails.