Mark Grayson, Invincible

Flash, Flying, Vilagence,

Other Heroes get +1+1, and Flash

Heroic Friendship: Whenever another hero enters the battlefield under your control, look at the top X cards of your library, where X is the other hero's power. Put a card into your hand and the rest into the bottom of your library. If the chosen card was a nonland permanent, that spell cost {x} less to cast until the end of the turn.