Genesis Chamber

Symmetry is the engine and the liability in equal measure. Every nontoken creature anyone plays mints a Myr for its controller, so the table fills with 1/1 artifact creatures regardless of who deployed the threat. That broad reach is what makes it an enabler for anything hungry for cheap bodies: Myr tribal shells, sacrifice loops that need fodder, token-doublers that turn a single creature drop into a swarm, artifact-count payoffs that treat the Myr as ammunition. The untapped clause is the discipline that keeps it from running away: tapping the Chamber, whether to a tapper effect or your own design, switches the faucet off, which gives an opponent a real lever against a board that would otherwise snowball. The strategic question it poses is never whether it makes Myr but whether you can break the symmetry harder than your opponent can. A creature-light deck running it next to a creature-heavy one is essentially gifting tokens away; the card rewards the player who has either the most creature drops or the most ways to convert spare 1/1s into something the opponent cannot. It is a colorless enabler that asks you to do the math on who benefits more, and the answer changes from board to board rather than being printed on the card.