Mudflat Village

Four creature types on the buyback clause: Bat, Lizard, Rat, and Squirrel. That list is the whole tell. This is a tribal recursion engine wearing the costume of a mana source, built for the go-wide, aristocrat-adjacent decks that flood the board with small typed bodies and need to rebuild after a sweeper clears them off. The mana modes are the setup: it taps for colorless freely, taps for black only into creature spells, and holds its ground as an untapped land in the early turns. The real job arrives later, when you pay black and a generic, sacrifice it, and return a spent body to hand. The land tax is deliberate. You are not looping anything for free, and because the recursion mode eats the land itself, the enters-early fixing and the late-game value are the same permanent doing two different jobs at two different points in a game. That structure folds neatly into any deck that already treats lands as sacrifice fodder or graveyard fuel, since the buyback turns a stranded mana source into a spell rather than leaving it as dead ground. Nothing here is loud, but the design is disciplined: a Regrowth stapled to a land, gated by a type restriction narrow enough to keep the recursion from being generically abusive while staying wide open to the tribes it was cut for.