Myr Propagator

Self-replication is one of the oldest jokes in the artifact-creature canon, and this one tells it in the slowest, most arithmetic-bound way possible. The math never lies: three mana plus a tap produces one more 1/1, and that 1/1 needs three mana and a tap of its own to make the next. Every copy is another body that does nothing but extend the chain, so the engine compounds only if something elsewhere converts raw token count into pressure: a sacrifice outlet, an anthem, a payoff that scales with creatures on the battlefield. Left alone it is a treadmill, spending mana to manufacture Myr at a rate no clock cares about. What gives it any pulse is the tribal scaffolding of colorless Myr decks, where each new token feeds the same triggers and counts toward the same payoffs the deck was already chasing without it. The copy clause is the entire design idea, and it is a deliberately weak one: a self-perpetuating widget that asks its surroundings to supply the urgency the card itself withholds.