Demolisher Spawn is a rare Enchantment Creature — Horror card from Duskmourn: House of Horror Commander (DSC), collector number 31. Current market price: $0.31, TCGplayer market prices via Scryfall.
Trample, haste Delirium — Whenever this creature attacks, if there are four or more card types among cards in your graveyard, other attacking creatures get +4/+4 until end of turn.