Whenever an opponent attacks you and/or one or more planeswalkers you control, exile the top card of that player's library. You may play that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast it.
NM-Mint - $3.40
Lightly Played - $3.00
Moderately Played - $2.70
Heavily Played - $2.40
Damaged - $1.70
NM-Mint Non English - $3.40
Lightly Played Non English - $3.00
Moderately Played Non English - $2.70
Heavily Played Non English - $2.40
Damaged Non English - $1.70