Redeye Raptor

Devolve (Whenever a creature enters the battlefield, if its power is less than this creature's power and/or its toughness is less than this creature's toughness, put a -1/-1 counter on this.)
Whenever a counter is placed on Redeye Raptor, put an X/X black Dinosaur token on the battlefield. X is equal the number of counters on Redeye Raptor.