Llanowar Stalker

Deploy a second creature and this Elf swings for two; deploy a third and it swings for three; end the turn and it slinks back to a plain 1/1 with nothing to show. That expiring clock is the entire discipline of the design. The bonus never accumulates into a permanent threat you develop across several turns, which forces the deck around it to be one that empties its hand and attacks, not one that grinds toward inevitability. It answers a familiar green problem: a 1/1 for a single green is filler unless it scales, yet permanent scaling on a one-drop is a balance liability. Tying the pump to a single turn swaps that inevitability for tempo, so the card is worth exactly as much as the board you can put down the same turn you want it to connect. It sits among the green Elf aggro pieces that convert a curve of tiny bodies into one lethal turn, though it does no lifting for the rest of the team: the buff is strictly self-contained, a beater that rewards a flood without becoming a lord that shares the wealth. Everything about it is front-loaded into the attack step of a board dump, and that is the whole transaction.