Corpseweft is a rare Enchantment card from Dragons of Tarkir (DTK), collector number 92. Current market price: $0.15 (foil $0.50), TCGplayer market prices via Scryfall.
{1}{B}, Exile one or more creature cards from your graveyard: Create a tapped X/X black Zombie Horror creature token, where X is twice the number of cards exiled this way.