Mulligans
Aggro Mulligans
You need lot of board clear, and early game value.
Control Mulligans
You need to do the combo earliest possible.
You just want to have lot of cards in your hand and play Mountain Giant early and use other “big hand” advantages. You can conquer controls with Whispering Woods and Soul of the Forest combo and you can win agains aggros with board clears, Crystalsong Portal and Bewitched Guardian. Keeper Stalladris, Crystalsong Portal and Witchwood Apple gives us a lot of value with keeping hand full.