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 - $32.70
Lightly Played - $26.20
Moderately Played - $22.90
Heavily Played - $19.60
Damaged - $16.40
Near Mint Spanish - $32.70
Lightly Played Spanish - $26.20
Moderately Played Spanish - $22.90
Heavily Played Spanish - $19.60
Damaged Spanish - $16.40