Growth Spasm is a common Sorcery card from Midnight Hunt Commander (MIC), collector number 139. Current market price: $0.41, TCGplayer market prices via Scryfall.
Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Create a 0/1 colorless Eldrazi Spawn creature token. It has "Sacrifice this token: Add {C}."