If you would pay life while your library has at least that many cards in it, exile that many cards from the top of your library instead.
[+1]: Look at the top two cards of your library. Exile one of them and put the other into your hand.
[-2]: Create two 1/1 black Nightmare creature tokens with "At the beginning of combat on your turn, if a card was put into exile this turn, put a +1/+1 counter on this creature."
[-7]: Target player exiles the top X cards of their library, where X is the total mana value of cards you own in exile.
Near Mint - £2.00
Lightly Played - £1.70
Moderately Played - £1.40
Heavily Played - £1.00
Damaged - £0.60
Near Mint Non English - £2.00
Lightly Played Non English - £1.70
Moderately Played Non English - £1.40
Heavily Played Non English - £1.00
Damaged Non English - £0.60
Foil Prices
Near Mint Foil - £3.20
Lightly Played Foil - £2.80
Moderately Played Foil - £2.30
Heavily Played Foil - £1.60
Damaged Foil - £1.00
Near Mint Foil Non English - £3.20
Lightly Played Foil Non English - £2.80
Moderately Played Foil Non English - £2.30
Heavily Played Foil Non English - £1.60
Damaged Foil Non English - £1.00