Whenever you cast your first spell during each opponent's turn, look at the top card of that player's library, then exile it face down. You may play that card for as long as it remains exiled, and mana of any type can be spent to cast it.
Near Mint - $12.400
Lightly Played - $10.000
Moderately Played - $8.700
Heavily Played - $7.500
Damaged - $6.200
Near Mint Spanish - $12.400
Lightly Played Spanish - $10.000
Moderately Played Spanish - $8.700
Heavily Played Spanish - $7.500
Damaged Spanish - $6.200