Jhoira, Weatherlight Captain

"Historic" is a batching term, a bit of deckbuilding scaffolding that groups a supertype (legendary), a type (artifact), and a subtype (Saga) under one word so a set's artifact-and-legendary theme parses as a single mechanical category. This is the card that proved the category could anchor an engine. The trigger is broad in a way that rewards a specific kind of list: every legendary creature you cast, every artifact, every Saga refunds itself with a card, and at four mana with only two colored pips she lands early enough to start paying you while the rest of the historic spells are still in hand. The restriction that keeps her from running away is the one that defines the archetype: your nonhistoric spells (most of your removal and interaction) draw nothing. To make the captain work you bend the whole deck toward historic permanents, promoting the cheap legendary creatures and one-mana artifacts that would otherwise be filler until the curve itself becomes the engine. A 3/3 body means she dies to almost anything, so the payoff is deliberately front-loaded: the draws have to come fast, and they land hardest in the turns right after she resolves. As the marquee legend of the Weatherlight's crew, she became the default face for a build defined entirely by this trigger, where a historic-matters shell finally carries enough density of legends and artifacts to fire on nearly every cast.