Mulligans
General Mulligans
Fill your board with small things and turn them into big threats.
Aggro Mulligans
Taunt is cheat. Taunt up your wisps and buff them.
Midrange Mulligans
Kill your opponent fast as possible since they probably have cheats like spiteful summoner.
Combo Mulligans
Kill as fast as possible.
Control Mulligans
Get big things out and roar savagely.
Draw a lot with Witchwood Apple or Ultimate Infestation. Summon a ton of wisps with Wispering Woods or play Mountain Giants, and then use druid board-buffs to make them stronger. Soul Of The Forest gives your board survivability.
Really nice theorycraft.