Unnatural Aggression

Green's fight spells have always traded clean removal for a brawl you have to win, and the exile clause here is the upgrade that turns the brawl into an answer. Most fight effects leave you exposed to the recursion that defines green-adjacent value decks: a creature you sent to the graveyard is a creature your opponent gets to buy back. By replacing death with exile, this strips that escape hatch, so death-trigger payoffs and graveyard recursion stay gone once your creature finishes the job. There is a limit worth naming: the replacement only fires on a creature that actually dies, so it does nothing against an indestructible blocker, which absorbs the fight damage and shrugs; the upside is reserved for the threats that were headed to the graveyard anyway. Stamping it colorless is the other wrinkle: it lifts the spell out of the reach of color-based protection and color hosers while keeping it firmly a green card by mana cost, a texture from the era when designers were probing what "colorless but castable only with one color" could do. The cost of admission is the one green removal always pays: your creature has to win the fight, and a kill that leans on a body already on the battlefield asks more than pointing three damage at a target ever does. What you buy for that requirement is permanence; against decks built to die and come back, an exile-fight at instant speed is a sharper tool than its rate suggests.