When Phyrexian Devourer's power is 7 or greater, sacrifice it. Exile the top card of your library: Put X +1/+1 counters on Phyrexian Devourer, where X is the exiled card's converted mana cost.
Near Mint - $41.000
Lightly Played - $32.800
Moderately Played - $28.700
Heavily Played - $24.600
Damaged - $20.500
Near Mint Spanish - $41.000
Lightly Played Spanish - $32.800
Moderately Played Spanish - $28.700
Heavily Played Spanish - $24.600
Damaged Spanish - $20.500