Serigala, Lightsworn Protector

Flying, lifelink, vigilance
Whenever a source an opponent controls deals damage to you, a Human you control, or an Angel you control, you may have Serigala, Lightsworn Protector deal 2 damage to that source's controller.
At the end of combat, if Serigala, Lightsworn Protector attacked this combat and was dealt damage by a non-Human, non-Angel creature, transform him.