Chatterfang, Squirrel General

A token doubler that pays only itself, and that self-restriction is the whole engine. Rather than copying every token type the way older doublers do, the replacement effect adds Squirrels one-for-one alongside whatever you were already making, so a Sylvan Offering pack, a Clue, a Treasure, a swarm of anything: each arrives with an equal army of green bodies bolted on. Those bodies then feed the second ability, a black-costed sacrifice sink that hands a target creature +X/-X until end of turn, converting a wide board into removal (or a lethal buff on your own attacker) at instant speed. The design closes its own loop: the effect that widens the board also stocks the fuel for the effect that spends it. What makes the sacrifice outlet land is that the fodder is never the tokens you actually wanted, so cashing them in rarely stings. The forestwalk is almost incidental, a nod to the squirrel-in-the-woods flavor and an occasional way to push damage through a green mirror, but the card's identity lives entirely in the token-plus-Squirrel clause and the sacrifice outlet stapled to it. It is the commander that made Squirrels a real tribe rather than a recurring joke: before this, Squirrel payoffs were scattered novelties; this stitched them into a coherent aristocrats-and-tokens shell with a single card doing both the go-wide and the go-lethal work.