Kuldotha Rebirth

Trade one artifact for three bodies, and the math only works because the artifact you sacrifice usually wasn't going to do much on its own. The sacrifice clause reads like a tax until you treat it as the engine's hinge: feed it a spent piece of Equipment, a Memnite that already attacked, or (the dream) a leftover artifact token that costs you nothing to convert. Three Goblins for a single red is an aggressive rate on its face; getting there by recycling a dead artifact is what turns it from a wash into a genuine card-advantage play. The output sits at the seam between two strategies without committing to either: the cost feeds artifact-matters synergies (you give up one) while the result feeds Goblin-matters synergies (you bank three tribesmen at once). That simultaneity is the strategic payload. Three tokens arriving together is fodder for a single sacrifice outlet, three separate triggers for anything that counts creatures entering, three anthem targets, or six power on the board behind a standard lord. The card's whole identity is that conversion ratio, and its discipline is that the conversion is mandatory: you cannot cast it without an artifact to give up. That requirement rewards a deck already manufacturing disposable artifacts and shuts out one that isn't, which is the exact constraint that keeps a one-mana, three-token spell from being a free roll.