The Eternity Elevator is a rare Legendary Artifact — Spacecraft card from Edge of Eternities (EOE), collector number 241. Current market price: $2.50 (foil $3.77), TCGplayer market prices via Scryfall.
{T}: Add {C}{C}{C}. Station (Tap another creature you control: Put charge counters equal to its power on this Spacecraft. Station only as a sorcery.) 20+ | {T}: Add X mana of any one color, where X is the number of charge counters on The Eternity Elevator.