Phyrexian Soulgorger
Coldsnap — rare
Snow Artifact Creature — Phyrexian Construct
Phyrexian Soulgorger rulings:
2006-07-15: When Phyrexian Soulgorger’s cumulative upkeep ability resolves, you must either sacrifice a different creature for each age counter on Phyrexian Soulgorger or sacrifice it. You may also sacrifice it as part of its own upkeep payment.