Zanarkand, Ancient Metropolis // Lasting Fayth

Adventure was built for creatures: cast the spell, exile it, then deploy the body later. Bending that structure onto a land inverts which half does the work. Lasting Fayth is the payoff you cast up front for six mana, and the permanent you bank in exile is not a creature waiting to be played but a green mana source waiting for a future land drop. The token it makes has no fixed size; its power is bought with the number of lands you control at resolution, so this is not a card that pays you for eventually committing to a board. It pays you for having already sprawled a wide manabase before the sorcery ever hits the stack. That is the wrinkle worth sitting with: a green ramp deck wants a mana sink that does not cost it a card and does not fold to a single point of interaction, and the usual answer is a beefy creature that hands an opponent full value the moment it dies. Here the sink is folded into the manabase itself. The exiled half keeps the six mana from being pure tempo loss, because you recoup the tapped green source on a later turn and the body you spent on is not also a skipped land drop. It is a land, a mana sink, and a scaling threat sequenced across two turns, with the land deferred so neither half fully cannibalizes the other.