Mulligans
Treenforcements x Ironbark
The Reason for this change is due to the flexibility of Treenforcements through out the game. It can be used as a 1 drop on turn 2 while maintaining the quest going, as a way to get more minions on the board during the mid game, while also helping for example the Oasis Surger on trading and staying alive, and also creating a big Ysera, Unleashed taunt while dodging some of the priest easy removals (Shadow Word: Death ) and therefore reducing Zephrys the Great options.
Worthy Expedition x Innervate
Worthy Expedition instead of Innervate grants more options to act during the game and also helps correct your card draw.