Very difficult to lose with this deck. I'd guess 90%+ win rate.

Keep HW Y'shtola and A&A to the bottom corners.
Keep in mind you can beat Cid and Kan's 9s with an 8 (+1) from Ascension.
Also, his left-side numbers are pretty weak; leaving your right-side numbers exposed is a fairly safe risk once you have a few cards on the board.