This is the Expedition Deck that took me to Master's this month. In short, it's a ramp list that has a number of fun combos in it focused around cards such as Kairos, Ravid, and Xulta Arcanum. The deck is at its weakest in the early game as it comes out slowly, but I've rarely if ever had issues with not having the right influence, and in the middle and late game, it becomes an absolute monster.
Build your power and Influence with Trail Maker and the mastery trigger on Intrepid Longhorn to get out your big stuff early. And don't be afraid to take a few hits early on if it means saving important units you can't afford to risk.
Getting boardwiped tends to be one of our big fears, so the cleansing rain in our market pulls double duty, giving us and all our units an aegis is nice for stopping that, not to mention it is fantastic vs curse decks.
Siraf, grand strategist and Kairos play very well together once you know that the passive effect of Kairos and the double damage that siraf's twisted minions have go off together. One of the easiest ways to win once Kairos comes down is to just play a pump spell like Aamri's choice or finest hour on siraf, then twist her 3 times, dealing 8 + 10 + 12 damage to your opponent's face.