Tetzin, Gnome Champion // The Golden-Gear Colossus

A double-faced artifact that turns your own deck into its supply chain, then flips into a threat that spends what it stockpiled. The front is a self-mining engine keyed to a card type that barely functioned as a coherent build-around before transforming artifacts became a resource you assemble and spend: every double-faced artifact you play, itself included, mills three deep and offers to bank an artifact card back to hand. That mill quietly stocks the graveyard while the value clause refills your hand, and both feed the six-artifact payment craft demands to flip the front. The back is where the loop closes. The Golden-Gear Colossus is a trampling, vigilant body that, on entry and on every attack, transforms another double-faced artifact you control for free (no craft cost paid) and leaves two Gnome tokens behind each swing. So the front's card-selection engine becomes the back's combat engine: every attack step converts a collected transformable artifact into value without ever paying to flip it. The design lesson is how tightly the two halves interlock. The front exists to gather the six artifacts craft requires and to guarantee a graveyard worth exiling; the back weaponizes the very double-faced artifacts the front spent the game collecting. Neither face is remarkable in isolation. Together they form a closed system that mills its own fuel and cashes it out in combat, a build-around that supplies its own build-around.