Master's Rebuke

Fight spells used to be a bilateral affair: your creature and theirs both dealt their power to each other, and the surviving body was the one that started bigger. This design keeps the premise (green kills by combat math rather than by pointing at a target, the color-pie line Wizards guards against clean point-and-kill removal) but deletes the return blow. Your creature deals the damage, the enemy creature or planeswalker eats the full hit, and nothing comes back. Older one-sided fight effects mostly restricted themselves to creatures; extending the target line to planeswalkers is the meaningful improvement, because green rarely gets to answer a loyalty threat without racing it down over several turns. The price of admission is that you need a deployed beater with real power behind it: with no creature in play, the card sits inert in hand, and its ceiling is capped by whatever fatty you already committed. That is the tax green pays for removal it isn't supposed to have cleanly: the color buys its kill with board presence rather than raw efficiency. The instant window is where the reads live. Hold it through combat to blow out an attacker, snipe a tapped-out creature on the crackback, or leave it hidden until the moment it resolves into a kill spell that also leaves a corpse in the yard.