Impact Resonance

Most divided-damage spells make you pay for every point of reach: Fireball scales with your mana, and cheaper burn caps at whatever it prints. This one outsources its scaling entirely, reading the turn's biggest damage event and stamping that number across as many creatures as you want. The result is a sweeper whose ceiling is set not by your mana but by whatever violence already happened on the table. A big attacker connecting, a Blasphemous Act resolving, a high-power creature landing combat damage, even an opponent's own burn spell or a fight effect: all of it loads the gun for you. Timing is the catch. With nothing to feed it, X is zero, so it needs a damage event sequenced first, then an answer with the resonance, which makes it a reactive payoff rather than a removal spell you can hold blind. That reactivity is also its edge: fire it at instant speed after blocks, after a combat trick, after an opponent overcommits a damage source, and the same red instant that would whiff in a vacuum erases a board. It is a parasite that turns the game's largest single hit into a mirror pointed at everything else.