Tawnos, Solemn Survivor

The first activated ability is where the design lives: it turns any artifact token you control into an assembly line, spitting out copies for two generic and a tap while quietly filling your graveyard. That mill clause is not incidental cost, it is feedstock. The second ability spends the tokens the first one manufactures, sacrificing two artifact tokens to reanimate an artifact or creature from the yard as an artifact copy, which loops right back into the first ability's fuel supply. The two halves are built to feed each other: token generation stocks the graveyard, the graveyard restocks with bigger threats, and those threats become artifact tokens the first ability can duplicate again. What makes the engine interesting is the color it lives in. Reanimation and self-mill are black-and-white territory by convention, but here they are stapled to a blue artificer who ramps his own resource loop rather than paying full retail for it. The Esper-costed second ability is deliberately expensive and sorcery-speed, the throttle that keeps a self-perpetuating copy loop from spinning out on the turn it lands. Named for the artificer who served Urza across the whole legendarium, the card reads less as a beater (a 1/3 body does no work in combat) and more as the control panel for an artifact-token machine you have to build the pieces for yourself.