Zach control deck
Possible win conditions I woild consider if ashiok isn't working:
Prognostic sphinx
pearl lake ancient
Garruk, apex predator
Sagu mauler
empty the pits
villainous wealth
Some number of murderous cut might be correct to play
It may also be correct to play a sweeper. The ones you have access to are aetherspouts and perilous vault.