Soul Swallower is a rare Creature — Wurm card from Shadows over Innistrad Promos (PSOI), collector number 230. Current market price: — (foil $0.43), TCGplayer market prices via Scryfall.
Trample Delirium — At the beginning of your upkeep, if there are four or more card types among cards in your graveyard, put three +1/+1 counters on this creature.