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 - $32.700
Lightly Played - $26.200
Moderately Played - $22.900
Heavily Played - $19.600
Damaged - $16.400
Near Mint Spanish - $32.700
Lightly Played Spanish - $26.200
Moderately Played Spanish - $22.900
Heavily Played Spanish - $19.600
Damaged Spanish - $16.400
Foil Prices
Near Mint Foil - $38.200
Lightly Played Foil - $30.500
Moderately Played Foil - $26.700
Heavily Played Foil - $22.900
Damaged Foil - $19.100
Near Mint Foil Spanish - $38.200
Lightly Played Foil Spanish - $30.500
Moderately Played Foil Spanish - $26.700
Heavily Played Foil Spanish - $22.900
Damaged Foil Spanish - $19.100