Mysterious Hero is a uncommon Creature — Hero card from Unknown Event (UNK), collector number UU03e.
Super Secret Identity {2}{U} (Before the game begins, if your deck is sleeved, you may put another creature card on top of this one in the sleeve. Don't tell anyone! If this permanent is on the battlefield, you may pay {2}{U} to remove the card above it in the sleeve.) Hexproof Whenever this creature deals combat damage to a player, draw a card.