Mulligans
Ra-Ra Rogue is still in Theorycraft and still under skepticism. But I do believe with the new Rogue Shuffle Card And Elekk this Deck can produce quite the amount of Ras (Even though you probably only need 1 to win).
Shadow of Death really helps Rogue pull this deck off because it provides the easy amounts of Mogu Cultists at a much faster pace. And with Augmented Elekk, you shuffle in 6. Meaning that if you get all 6 drawn, you only need 1 more to complete the Battlecry.