Surren's Invocations

Whenever a nontoken creature you control dies, create a 2/2 Black Zombie creature token.
Whenever you sacrifice a nontoken creature, create an X/X Blue and Black Zombie Horror creature token, here X is that creature's power.
Whenever a nontoken creature you control is exiled, create an X/X Blue, Black and Red Zombie Avatar creature token, where X is that creature's power.