Apocalypse
When Discarded: Put this back with +4 Power.
Captain America
Ongoing: Your other Ongoing cards here have +2 Power.
Falcon
On Reveal: Return your 1-Cost cards to your hand.
Iceman
On Reveal: Give a card in your opponent's hand +1 Cost.
(maximum 6)
Moon Knight
On Reveal: Discard an even-costed card from each player's hand.
Red Hulk
End of Turn: If your opponent has unspent Energy, +3 Power.
(if in hand or in play)
X-23
When Discarded or Destroyed: Regenerate this at a random location and you get +1 Energy next turn.