Slapback, Self-Duplicator

Trample
Whenever Slapback takes damage, create a token that’s a copy of Slapback, except it isn’t legendary and it enters the battlefield with a -1/-1 counter on it.

At the beginning of your end step, if you control four or more creatures named Slapback, sacrifice all but one of them.

"Why fight one of me... when you can lose to a dozen?"