Angelic Exaltation

The math runs backwards from how attack-anthem effects usually work. Most go-wide payoffs reward committing bodies to the red zone; this one rewards keeping them home. Every creature you leave behind still counts toward the bonus on your lone attacker, and since the attacker counts itself, a board of ten with one swinger hands that single creature +10/+10 while nine blockers stay back on defense. It sits in the tradition of "attack alone" designs that go back to exalted, but where an exalted stack gives a fixed, front-loaded bonus regardless of how wide you are, this scales with the width you have already built and never spent. The tension it resolves is the classic go-wide problem: you flood the board, then have no way to break through a wall of blockers without alpha-striking into bad trades. This lets a token army stay home as a defensive shell while a single evasive creature carries the actual clock, and because the buff lands on whichever creature attacks alone rather than a designated one, a deck with menace, flying, or trample can pick its lane each turn. The catch is baked into the trigger's wording: the instant a second attacker joins the swing, the whole thing shuts off, so it is an engine that punishes greed and rewards discipline about which creature you are willing to expose.