Mulligans
Draw towards the combo with the Rafaam’s Scheme/Fiendish circle with cult master, as well as Witchwood Piper and Sense Demons.
Against classes with no healing/Armor gain (Mainly rogue/hunter), you are going to want to OTK them. This includes setting up with Alextraza the turn before, putting them at 15. next turn you double spellzerker then shriek, discarding the wisp and giving you spell damge +4. you then Drain life face, putting them at 9, then soulfire into elven archer or other soulfire (depending on the discard) for lethal.
Against control matchups (mainly warrior), just play rafaam and hope for the best