Acorn Harvest

Four squirrels for six total mana spread across two casts, with the second installment payable in life instead of cards. That trade is the entire pitch: the graveyard half asks for three life and two mana to refill the board, which makes this a token producer that survives the sweeper that wiped its first wave. Two bodies now, two more after a wrath, all from a single card slot. The Squirrel typing slots into a tribe that has accumulated payoffs across many sets since, from anthem effects to sacrifice fodder, and a four-token spread feeds any board-presence math that scales with creature count: convoke, devotion-adjacent counting, sacrifice loops, populate. Flashback is the structural trick that makes the rate add up: the card spends two trips through the stack rather than one, so it doesn't compete with itself on a single turn and slots cleanly into a curve where you cast the front half early and buy the back half off a later draw. The life payment is what keeps the second cast honest, pricing the refill in a resource a green token board usually has to spare rather than in mana it would rather spend on threats. The flashback clause exiles the card afterward, so the engine is finite by design: four tokens total, then the slot is spent.