Phyrexian Soulgorger is a rare Snow Artifact Creature — Phyrexian Construct card from The List (PLST), collector number CSP-141. Current market price: $6.72, TCGplayer market prices via Scryfall.
Cumulative upkeep—Sacrifice a creature. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)