The Sixth Doctor

Copy effects usually live in red or blue, aimed at a single spell for a single turn, but the payoff here is baked into a triggered ability that fires on nearly everything a value-dense list already wants to cast. Historic is a deliberately broad net: artifacts, legendaries, and Sagas cover a huge slice of any spell-heavy deck, so the trigger condition rarely goes unmet. The limit to one copy per turn is the balancing pin. Without it, a two-spell turn would fork into a cascade; with it, every turn becomes a sequencing puzzle where you identify the single most valuable historic cast and lead with it, so raw volume matters less than order of operations. The "isn't legendary" clause on the copy is the quiet engine underneath: legendary permanents normally can't coexist, but a token copy sheds that supertype and sticks around, which reframes every legendary artifact and creature you own as a doubling target rather than a self-competing one. The body is beside the point; a 3/3 in these colors is a rounding error. The value proposition is the fork itself, and the deckbuilding it demands: fill the list with historic spells whose copies matter (mana rocks that ramp twice, enters-the-battlefield creatures that trigger twice, Sagas that both march through their chapters) rather than counting on the 3/3 to do anything but hold the ability aloft.