+1: Create a tapped Powerstone token. (It's an artifact with “{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.”)
−1: Pay any amount of mana. Look at that many cards from the top of your library, then put one of those cards into your hand and rest on the bottom of your library in a random order.
−7: You get an emblem with “Tap an untapped artifact you control: This emblem deals 1 damage to any target.”
Near Mint - $500
Lightly Played - $400
Moderately Played - $400
Heavily Played - $300
Damaged - $300
Near Mint Spanish - $500
Lightly Played Spanish - $400
Moderately Played Spanish - $400
Heavily Played Spanish - $300
Damaged Spanish - $300
Foil Prices
Near Mint Foil - $1.000
Lightly Played Foil - $800
Moderately Played Foil - $700
Heavily Played Foil - $600
Damaged Foil - $500
Near Mint Foil Spanish - $1.000
Lightly Played Foil Spanish - $800
Moderately Played Foil Spanish - $700
Heavily Played Foil Spanish - $600
Damaged Foil Spanish - $500