Arvinox, the Mind Flail isn't a creature unless you control three or more permanents you don't own. At the beginning of your end step, exile the bottom card of each opponent's library face down. For as long as those cards remain exiled, you may look at them, you may cast permanent spells from among them, and you may spend mana as though it were mana of any color to cast those spells.
Near Mint - $34.600
Lightly Played - $27.700
Moderately Played - $24.300
Heavily Played - $20.800
Damaged - $17.400
Near Mint Spanish - $34.600
Lightly Played Spanish - $27.700
Moderately Played Spanish - $24.300
Heavily Played Spanish - $20.800
Damaged Spanish - $17.400
Foil Prices
Near Mint Foil - $40.100
Lightly Played Foil - $32.100
Moderately Played Foil - $28.100
Heavily Played Foil - $24.100
Damaged Foil - $20.100
Near Mint Foil Spanish - $40.100
Lightly Played Foil Spanish - $32.100
Moderately Played Foil Spanish - $28.100
Heavily Played Foil Spanish - $24.100
Damaged Foil Spanish - $20.100