Rienne, Angel of Rebirth

A payoff written for the specific problem multicolor decks have always had: the more colors a spell wants, the harder it is to cast, so building around gold cards means building around demanding, color-intensive commitments. Rienne answers both halves. The static anthem is minor on its own (+1/+0 to a board of multicolored creatures), but the death trigger is the load-bearing piece: it turns every other multicolored creature you control into a recurring threat, bouncing it back to hand at the next end step so a board wipe becomes a re-cast rather than a graveyard. That reframes how you play into removal. You stop protecting individual creatures and start treating your gold-heavy board as a resource that refills, which quietly punishes the sweepers a three-color deck would otherwise fear most. The trigger is deliberately hand-return, not battlefield-return: no cheating on mana, no instant reanimation, just the cards coming back to be paid for again, which keeps the loop honest against a deck with real recursion tempo. Her Naya cost on a five-mana 5/4 flier signals exactly the kind of deck she wants around her, one where nearly every creature is multicolored and therefore counts twice under both the anthem and the trigger. She is less a bomb than an engine: a reason to load a deck with gold cards you would otherwise call too demanding to commit.