Salvaged Manaworker

Most fixing artifacts pay for color access with a rate cut; this one pays with two separate frictions that push it away from acceleration entirely. The ability costs to produce one mana of any color, so it nets nothing: it is a filter, a way to turn a colorless mana into the right color, not a source of extra mana. And it can only fire once each turn, which closes the door on the trick that untapped rocks live for, chaining or doubling into a spike. What that leaves is a color-smoother stapled to a body, and the body is the actual selling point. A 1/3 blocks early aggression in a way no inert mana rock ever will, and the toughness lets it hold a lane deep into the midgame long after the fixing has stopped mattering. The design commits to the trade cleanly: it will never enable a fast start or a burst turn, but it also refuses to rot into a dead draw, since it is still a creature that can chump, trade up, or serve as an artifact for anything that counts them. This is fixing built for the grind rather than the curve, defensible when the plan is to trade resources across many turns and the accelerant slot needs to keep contributing once its color job is finished.