If UB control is a thing, then why not Sultai or Grixis? UB is going to be strong anyhow, with the addition of Crux of Fate, and it can help here as well.
Not much explanation here, just lists.
What does green really bring into the equation? Ramp and Villanous Wealth.
There’s also a chance we can make the decision on Crux of Fate work for us. Especially with Silumgar, the Drifting Death. Also, one Golaghan, the Storm’s Fury just because Silumgar is legendary and this deck wants to go long.