American Prime

Haste, Flying, Lifelink, Hexproof.

When American Prime enters the
battlefield, put a +1/+1 counter on it for each
creature you control.
Whenever American Prime attacks,
creatures you control get +1/+1 and gain
vigilance until end of turn.
Whenever a Cybertronian or an Avenger
you control deals combat damage, target
player mills that many cards and takes
damage equal to that amount.