Mulligans
The way you will win with this deck is to out tempo your opponents using jade golems and removal to keep your board presence large and theirs small.
Some combos to keep in mind while playing this deck have to do with Aya Blackpaw and Jade Swarmer. You wil usually want to use Unearthed Raptor on one of these cards so your jade golems will start getting larger early. Also keep in mind that Aya Blackpaw is one of the highest priority target for Shadowcaster, Jade Swarmer is also an acceptable target forShadowcaster.
Your ideal turn order would be something like this: turn one: pass (unless going second and you have an answer to a large threat one drop) turn two: Jade Swarmer turn three: Unearthed Raptor turn four: removal if needed