Ixidor, Reality Sculptor

The premise of a face-down creature is information warfare: a 2/2 that might be anything, costing your opponent the chance to attack or block honestly. This is the lord built to make that bluff lethal. Every face-down body on your side becomes a 3/3, so the generic morph you slammed already trades up, and the army of question marks you build is quietly bigger than the math your opponent is doing. The activated ability handles the flip economy: turning a face-down creature face up for a fixed cost means you stop paying each morph's printed unmorph price, which lets the cheap morphs with punishing flip costs come online when you decide rather than when their text would let you. The tension this resolves runs through morph as a strategy: every face-down creature is a tempo gamble, three mana spent on a 2/2 hoping the flip matters later. Ixidor converts that gamble into a board state where the bluffs are real threats whether they ever flip or not, and where the flip happens on your schedule for one price instead of theirs. He is the rare tribal payoff for a tribe that shares no creature type at all, only a posture: face-down.