Junktown is a rare Land card from Fallout (PIP), collector number 150. Current market price: $0.28 (foil $0.46), TCGplayer market prices via Scryfall.
{T}: Add {C}. {4}{R}, {T}, Sacrifice this land: Create three Junk tokens. (They're artifacts with "{T}, Sacrifice this token: Exile the top card of your library. You may play that card this turn. Activate only as a sorcery.")