Theoretical Duplication

Most copy effects in blue are one-shot: cast a spell, target something, get a token, done. This one is a trap laid across a whole turn. It watches the battlefield instead of the stack, so it does not care what your opponent casts or how; it cares that a nontoken creature they control enters, and it forks a copy for you every time one does. That reframing is the whole point. Against a single big drop it is a serviceable clone, but its ceiling is any turn where an opponent floods their board with real creatures: a mass reanimation, a chain of enters-the-battlefield effects that pull bodies from library or graveyard, a cascade that dumps several nontoken threats at once. Token swarms do nothing here by design; the spell reads what actually enters and skips anything a copier could too easily abuse. Each qualifying entry mints another copy under your control, and the effect keeps firing until end of turn. The instant speed is doing quiet work: you hold it up as a punish, deploying it in response to the first sign an opponent is about to overcommit, then reap the entire sequence rather than picking off one threat. It reads like a defensive clone and plays like a swing spell, turning an opponent's best turn into your best turn, which is a very different design axis than the point-and-copy blue has leaned on for decades.