Riftstone Portal

Land
{T}: Add {1} to your mana pool.

As long as Riftstone Portal is in your graveyard, lands you control have "{T}: Add {G} or {W} to your mana pool."¹
Illus. Don Hazeltine

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (1/6)	Judgment (Uncommon)