Iron Man, The Defender

Flying, Vigilance.
When "Iron Man, The Defender" enters the battlefield or attacks, all other Avengers you
control gain +2/+2 and Flying until end of turn. This Ability can only trigger once each turn.
If you control "Iron Man, The Defender" and
"Tony Stark, Billionaire Genius", sacrifice them
both and search your library/graveyard for
"I Am Iron Man",
reveal it, and put it in your hand.