Doctor Doom, Unrivaled

The mill-yourself-into-victory clock has always been blue's project: Laboratory Maniac flips the empty-library loss into a win, Jace, Wielder of Mysteries hands that flip to a walker's static ability, and Thassa's Oracle collapses the whole plan into an enters-the-battlefield check. What separates this design is that it runs the same idea in black and folds the win condition and the engine that gets there onto a single body. The tap ability draws a card and shaves a life, then checks whether the library is empty and awards the game if it is. The parenthetical is where the work happens: it explicitly waives the two things that kill every other lab-maniac line, so you win at zero life and you win even if the draw itself was the point of no return. Ordinarily, drawing from an empty library is how you lose; here the emptying is the victory, so there is no fatal step to sequence around. The lifelink body is not decoration either, since combat life directly funds an ability that shaves a life each activation. The creature deck-thins and pays off at once: no assembling Laboratory Maniac plus a way to draw on an empty deck, no holding your breath on the last card. The loss condition is rewritten inside the card's own text, so the plan cannot backfire on the pilot who built around it.