Joo Dee, One of Many

The name is the mechanic: a spy identity worn by many faces, and the card builds a token engine around that fiction. Each activation makes a copy of itself and then demands a sacrifice, so the copy is not free growth; it is a replacement, one body swapped for another, with an artifact or creature fed to the machine every cycle. That symmetry keeps a two-mana creature from spiraling out of control on its own: the token count only climbs if you have external fodder to keep sacrificing, otherwise you are just recycling the same population. The surveil bolted to the front tunes your draws while the loop runs, small but relevant when the engine wants specific pieces to sacrifice or specific payoffs to hit. The sorcery-speed clause is the real governor, though. Because the ability can only fire during your main phase, there are no end-of-turn blowouts, no instant-speed sacrifice tricks in response to removal, and no ambushing an attacker with a fresh copy; every use has to survive a full rotation before it pays off again. Read the whole ability as a self-perpetuating aristocrats fixture rather than a threat: it wants a board of sacrifice outlets, death triggers, and cheap fodder around it, and it turns each turn into a slow, deliberate exchange of resources rather than a single explosive play.