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 - $24,800
Lightly Played - $19,800
Moderately Played - $17,400
Heavily Played - $14,900
Damaged - $12,400
Near Mint Spanish - $24,800
Lightly Played Spanish - $19,800
Moderately Played Spanish - $17,400
Heavily Played Spanish - $14,900
Damaged Spanish - $12,400