Sunder the Gateway is a common Sorcery card from The List (PLST), collector number MOM-39. Current market price: $0.10, TCGplayer market prices via Scryfall.
Choose one — • Destroy target nontoken artifact or enchantment an opponent controls. Incubate 2. (Create an Incubator token with two +1/+1 counters on it and "{2}: Transform this token." It transforms into a 0/0 Phyrexian artifact creature.) • Incubate 2, then transform an Incubator token you control.