Mulligan for Jepetto Joybuzz or Master's Call.

the idea is to save enough spells to face, keep board clear, and use your Hero Power to keep dropping enemy health until you can burn face with +spell damage,

either using the 3 other minions.

Malygos + Vereesa Windrunner can give you +7 spell damage

or use Alexstrasza to cut enemy health down for easier lethal.

Don't worry about pulling big minions early, remember, even if your card draws sucks, you can still win with a lot of hero power, and spell face.