I dont think they will use dune + momentum. It seems too big of a combo and too little from salvage. not to say they wont use it.
@tttt I didnt post that deck because it was point, and lost. meaning they had to discard all 30 cards. They probably dont have any anubis so i wouldnt test against that.
If they do a gotp rush it will be a rainbow with nightmare but they would have a lacking in the whole combo because they had to discard most of the deck. Fractal scarabs is what we should expect. and it has a 80% chance of being used.
The other 20% chance is the use of a blackhole pharaoh scarab deck.
If your deck does well against those two, I will be extremely confident.\
You could probably remove 1 of the purifies as encountering dunes is relatively unlikely, maybe for another pillar.