I had a great success doing master gauntlet runs with this deck. Almost every run goes to last boss.
AI will always kill Initiate of the Sands and Friendly Wisp if he has removal for it, so you have to keep Wisp in your hand until you can play it with 5 attack drop or protect it with backlash.
AI will always kill Wisp even if Wisp used his ultimate. If you have 2 Wisps on board, AI will kill the one that was played first (even if it already used its ult and second wisp still has his ult available).
AI will target Magus of the Mist if he has any removal as well, but often it missplays using something irrelevant like silence on it.
Main reason I use Magus instead of Cirso is because I started only a week ago, and got 3 Maguses from packs.
But it turned out really well, Magus keeps flying units in check if you fail to get your SST, or provides 6 flying damage if AI doesnt run any air.