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 - $2.000
Lightly Played - $2.000
Moderately Played - $1.000
Heavily Played - $1.000
Damaged - $1.000
Near Mint Spanish - $2.000
Lightly Played Spanish - $2.000
Moderately Played Spanish - $1.000
Heavily Played Spanish - $1.000
Damaged Spanish - $1.000