Gore-House Chainwalker

One card holds two creatures, and the keyword makes you pick one before the game tells you which you needed. Decline the counter and you have a 2/1 that can still stand in front of an attacker; take it and you have a 3/2 that has permanently signed away its block. The choice is front-loaded: you commit the instant it resolves, before you know how the race develops, and the counter is the kind that sticks (the card offers no native way to lift it once placed). That permanence is the whole bet. Unleash is not a toggle you revisit turn to turn; it is a one-time declaration that you are the beatdown and intend to stay there. The two-mana body is where the keyword's math is sharpest, because a 3/2 that never blocks is a real aggressive upgrade over a 2/1 that does, and the gap between those two cards is the entire design argument. The downside is just as real against decks that turn the corner: a creature that cannot block becomes dead weight on defense, and against another aggressor you may wish you had kept the smaller, flexible body. The keyword hands the tempo question straight to the pilot and refuses to hedge it, which is the most you can ask of a creature built to commit.