Stone Retrieval Unit

The Powerstone mechanic asks a specific question: what should acceleration be worth when the mana it produces refuses to cast anything but artifacts and pay for abilities? This body is one of the cleaner answers, settling the restriction at the rules level rather than through clumsy card-by-card wording. A 2/3 that hands over a Powerstone the turn it lands, tapped, so the mana arrives a turn behind schedule. That delay is the whole balance: the construct cannot ramp into a bigger construct on the turn it enters, it sets up next turn, which is the price for stapling an artifact-restricted mana source to a creature that can still block and trade. The colorless-ramp designs that came before it tried to keep artifact acceleration from leaking into general-purpose fast mana through wording and drawbacks; the Powerstone token does that structurally, and this construct is a plain delivery vehicle for it. Past the token it makes on arrival, the card is a serviceable body and nothing more. Read it as glue rather than centerpiece: an enabler for a build already leaning on artifact costs and colorless activations, where a blocker that also fuels the next expensive cast earns more than the stat line reads.