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 - $44.50
Lightly Played - $35.60
Moderately Played - $31.20
Heavily Played - $26.70
Damaged - $22.30
Near Mint Spanish - $44.50
Lightly Played Spanish - $35.60
Moderately Played Spanish - $31.20
Heavily Played Spanish - $26.70
Damaged Spanish - $22.30