Iuvo, Extricated Ouroboros

Devour 1, Menace, First strike
At the end of your turn create X 0/1 Coil
creature tokens with defender, where X is the
number of +1/+1 counters on this creature.
At the beginning of your turn Iuvo Devours as
though entering the battlefield.
So now view your heart aright, for it is a ravening
thing, an ouroboros set captive within your ribs.
-Denunciation of Reason, Third Pronunciation