Treeguard Duo

The math is what sells this, not the body. A 3/4 for four is unremarkable stapled to a creature, but the entry ability scales with your board: the pump is +X/+X where X counts every creature you control, this one included. On an empty board it's a shrug; on a developed one it turns any single blocker or attacker into a genuine threat, and it hands out vigilance so the pumped creature can swing and still hold the ground. That combination is deliberate. Vigilance is what lets a go-wide green board convert into a beatdown without opening itself up to the crackback, which is precisely the problem a token-flooded battlefield usually runs into. The card reaches for a familiar green idea (reward the player who has already committed the most bodies) but routes the payoff through a single targeted creature rather than an anthem, so the reward is concentrated and immediate instead of diffuse. That targeting is also the honest tax: the buff evaporates at end of turn, so it is a one-shot combat swing, not a permanent board state, and its payoff shrinks toward nothing when the Duo is the only creature you have to point it at. It asks you to have built the board first, then rewards you for having done so.