Omnath, Locus of All

Every prior Omnath has been mono-tribal in its greed: Locus of Mana hoarded green, Locus of Rage weaponized landfall, Locus of Creation fanned across four colors of enters-the-battlefield triggers. The Phyrexian rebuild throws out the color identity entirely, and its two abilities work in opposite directions to make that make sense. The first is a mana-conversion clause that reads like a drawback but functions as a floodgate: unspent mana doesn't burn away at the end of a step, it turns black, so the pool that would ordinarily empty instead persists as fixed black mana. The second is a card-advantage motor built for a deck saturated with gold and multicolor spells: look at the top card, and if it carries three or more colored pips you may reveal it to put it into your hand and add exactly three mana in its colors. The distinction between putting a card into hand and drawing it is not cosmetic: this ability sidesteps the punishers that key off the draw step and the act of drawing, Orcish Bowmasters and Sheoldred, the Apocalypse among them. The payout is flat, not scaling, so a three-pip card and a five-pip card refund the same three mana. The design tension is precise. The reveal ability rewards color density with immediacy, handing you mana in the exact colors of the bomb you just moved to hand. The black clause pulls the other way: any of that mana you leave unspent survives, but only as black, the least flexible color for a five-color hand. A creature named for all the colors that hoards the one nobody built around.