Worm Harvest is a rare Sorcery card from Commander 2016 (C16), collector number 238. Current market price: $0.26, TCGplayer market prices via Scryfall.
Create a 1/1 black and green Worm creature token for each land card in your graveyard. Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)