Horn of the Mark [The Lord of the Rings: Tales of Middle-Earth]

Cost: 2 Whenever two or more creatures you control attack a player, look at the top five cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. “He that blows this horn shall set fear in the hearts of his enemies and joy in the hearts of his friends.” —Eowyn