Yawg's Moth

Flying
Whenever Yawg's Moth deals combat damage to
a player, put a -1/-1 counter on all other
nontoken creatures. Then, put a token onto the battlefield that's a copy of Yawg's Moth except it
isn't legendary.
At the beginning of your upkeep, if the only creatures on the battlefield are named
Yawg's Moth, sacrifice all nonlegendary creatures you control