Summon: G.F. Cerberus

Spell-copying has almost always been an on-demand effect: a single burst you pay for and cash in, from Fork onward. Here the copy arrives on a clock instead. The Saga frame turns the payoff into a two-then-three ramp, where the first tick just smooths your draw with a Surveil and the genuine reward waits until the third lore counter, when your next instant or sorcery gets copied twice. That delay is the cost. You cannot fire the copy the turn you want it; you commit the enchantment two full turns ahead and telegraph the payoff to anyone watching the counters climb. What the design earns for that patience is a body that fights on an axis spell-copiers usually ignore: a 3/3 that attacks and blocks while the chapters resolve, contributing pressure the whole time rather than resolving once and vanishing. The chapter-two copy is a consolation prize with a real ceiling of its own; the chapter-three double copy is the reason to run it, a triple-cast of whatever burn spell, ritual, or tutor you hold that turn. The build that gets the most from it is one that can bank a spell for the trigger rather than empty its hand as fast as possible. The Saga structure also means it sacrifices itself on schedule, so the 3/3 is on a lease: three turns of board presence, then gone, with the copy spent on the way out.