Just Play a Brilliant Ultimatum and cast an Emrakul or another beasty to win.
Use liliana, jace or see beyond to place cards on top for the ultimatum.
Dont forget that when you play the ultimatum, yur selected pile keeps exiled, and you can play it at any time (counting it spell speed)
REALLY WORKS, I NEVER LOSE, REALLY
GOOD LUCK, TRY IT!