A-Hall of Tagsin

The "A-" prefix marks this as a rebalanced Alchemy variant, and the change was surgical: the Powerstone-generating line dropped from a four-mana activation to three, shaving the price on the mode that was always the slow half of the card. What looks like a rainbow rock with a Powerstone kicker is really a fixer wearing a factory. It enters as a real land that taps for colorless immediately, filters into any color for a premium, then, once you have spare mana lying around, turns itself into a repeatable Powerstone generator. The Powerstone line is the interesting half, because it is not fixing at all. Each token produces mana that cannot cast nonartifact spells, so it flows toward the artifact half of a deck and toward activated and triggered costs everywhere else while the color-fixing line services the rest. The tension the design resolves is that a card generating this much long-game mana would be oppressive if it entered producing it; instead every mode past the free colorless tap costs mana up front, so the land accrues value slowly rather than detonating. Trimming the Powerstone cost to three tightened that curve without breaking it: the land still asks you to be ahead before it starts paying, but the payoff arrives a turn sooner. It rewards a board that is already comfortable, which is a very different card from a mana rock that wins the race by itself.