Ire of Valansdael

Ire of Valansdael can't be blocked unless the defending player has seven or more cards in hand.
Whenever Ire deals combat damage to a player, exile that many cards from top of his or her library. You may look at and cast those cards for as long as they remains exiled, and you may spend mana as though it were mana of any type to cast those spells. Shuffle the cards exiled this way to their owner's library when Ire leaves the battlefield.