Dio, Full Vampire

Haste, lifelink.
During your upkeep, create a 2/2 Vampire token. Whenever you sacrifice a blood token or a creature, Dio gains +2/+2 until the end of the turn. This effect is not stackable.
{3}{b} or sacrifice a creature: Regenerate Dio. Regenerating Dio does not cause him to tap. Dio can only be regenerated once per turn.