Spitebellows

The conversion math is the entire pitch. Pay the evoke cost of , the creature enters and is immediately sacrificed, and 6 damage hits a target creature: a clean kill on nearly anything you would care to point it at, for three mana. Evoked, it is a pure removal spell, no body left behind; the 6/1 only exists on the battlefield if you hardcast it for the full six. That hardcast mode is real, and the body will trade up in combat, but the damage fires whenever the creature departs by any route, not just death. Cast it for full price and sacrifice it later, block with it and let it die, or watch an opponent's bounce backfire, and the 6 still resolves. That same leaves-the-battlefield trigger is what prices the evoke discount fairly: evoke sells the effect cheaply precisely because it strips the creature off the board the instant it arrives, so you are buying a one-shot spell, not a recurring engine. The bargain is binary. Either you pay three and keep nothing, or you pay six and keep a fragile 6/1 whose best turn is still the one where it leaves. Evoke was built for exactly this shape, where the enters-and-sacrifices clause lets a one-time effect be sold at a discount while preserving the option to deploy a body later. The damage makes it a sharp demonstration of that bargain: a creature whose value peaks when it stops being a creature.