Mulligans
General Mulligans
You basically want ramp versus everything and the spellstone is additional early game removal, though hero power is pretty good at 2 attack and armor.
Classic oakheart into drakkari enchanter, dragonhatcher, now with Witchwood Grizzly into double dragons. Baku helps a bit with early game. Now with n’zoth back, hadronox can shine by bringing back Witchwood Grizzly and Sleepy Dragon. The rest of the deck is removal and ramp, and bittertide hydra as a big beast to ressurect.