Walk-In Closet // Forgotten Cellar

Green rents graveyard recursion more often than it owns it, and this permanent hands the color a rare deed. The cheaper half quietly turns fetched, cycled, and milled lands into a slow replay engine, exactly the sort of durable value green has always been comfortable building around rather than stealing from another color. Unlocking Forgotten Cellar is the sharp move: it opens a one-turn window to recast every spell sitting in your graveyard, then bolts the exit behind you, because anything that would hit the yard this turn gets exiled instead. That exile clause does the balancing work. It converts the second door from a free reload into a timing puzzle, since the same effect that lets you replay three spells also guarantees none of them come back for a fourth. You want to detonate it on a turn you can empty the graveyard in one pass. The two halves almost never want the same turn, which is why folding them into one card is the whole trick: the land side is an engine you leave running, the spell side a charge you hold until it matters most. Rummaging and self-mill stock both doors, but the payoffs pull in opposite directions, one asking you to grind the graveyard forever and the other asking you to spend it all at once. It is green graveyard payoff that rewards deliberate expenditure over patient accumulation.