Tower Worker

The Assembly-Worker triad, resurrected as a set. On its own this is a 1/3 with reach bolted onto a mana rock: tap for one colorless, hold off a flier while you dig for the rest, nothing more. The whole design lives in the conditional clause, and it reads like a puzzle-box gag from an older era of Magic. Name the exact two other creatures (Mine Worker and Power Plant Worker), keep all three on the battlefield, and this one alone starts tapping for three instead of one. The upgrade is local: it does not reach across the board and hand the other Workers new mana abilities, so assembling the collection turns this piece into a triple faucet without automatically doing the same to its partners. That is the honest reading of a template Wizards rarely returns to, where the payoff is gated behind a specific-name requirement rather than a shared type or keyword, and where two of the three named cards mostly serve as keys that unlock the third. The reach is a small mercy that keeps the piece from being dead while you assemble the rest. Underneath the cross-brand novelty sits a designer's affection for the old collect-the-set build-around, printed intact rather than modernized: no substitutes accepted, no partial credit, just the three named Workers and the specific card whose mana ability their presence turns on.