Beni-enma

Flying, haste
Beni-enma can't block.
Whenever you attack with three or more
creatures, you may pay {r}{r}. If you do, return
Beni-enma from your graveyard to the battlefield tapped and attacking with a +1/+1 counter on it.
"Chirp, I'll try my best."
—Beni-enma