Gold Mine is a rare Land card from Mystery Booster Playtest Cards 2019 (CMB1), collector number 116. Current market price: $0.98, TCGplayer market prices via Scryfall.
{T}: Add {C}. Legacy — {T}, Mark one of Gold Mine's unmarked nodes: Add one mana of any color. ☐, ☐, ☐, ☐, ☐