I would suggest to remove the
Experimental Frenzy Or
Precognition Field in favor of
Bolas's Citadel( this way you can play the card more instance speed & even if you are tapped out, pay with your life)
& no you should keep your
Emergency Powers since you have
Smothering Tithe & instead of keeping
Rakdos, the Showstopper ( since you don't have any other demons), I would suggest the
incubation druid to reduce your curve
Also since I was building the same type of deck, made sure to include
Rhythm of the Wild to make sure if Golos trigger, no creature can be counter &
Domri, Anarch of Bolas is trying to counter Golos