Artifact Payoff

Cards that turn an artifact-heavy board into value, either scaling their power and abilities with how many artifacts you control or triggering whenever you cast an artifact spell. Cranial Plating grows the equipped creature by each artifact, Master of Etherium sizes itself to your artifact count, Sai, Master Thopterist makes a Thopter on each artifact cast, and Vedalken Archmage draws a card on each artifact spell. Distinct from Metalcraft, which grants a fixed bonus only at three or more artifacts rather than scaling continuously, and from Artifact Token Maker, which simply produces artifact tokens without needing a board of artifacts to pay off. Cards that merely reduce artifact spell costs or have affinity, with no reward ability, fall outside this scope.