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 - $7.20
Lightly Played - $5.80
Moderately Played - $5.10
Heavily Played - $4.30
Damaged - $3.60
Near Mint Spanish - $7.20
Lightly Played Spanish - $5.80
Moderately Played Spanish - $5.10
Heavily Played Spanish - $4.30
Damaged Spanish - $3.60