Mulligans
General Mulligans
Shredder is also good in the opening hand or shifting shade, depends if you face an aggro deck.
Fun control priest. The aim is of course to complete the quest and to remove your opponents threats and make it to the late game where this deck shines. Barnes has a really high chance to pull out something really strong (the worst would be deathlord) and is important in this deck. Forbidden shaping is in the deck because its an versatile card that could fill out your curve or could be used in late game to get a big drop (the 8-drops are probably the best). If you want to go really crazy you could throw in a Majordomo Executus, then the Amara brings up your Ragnaros hero up to 40 health with a bonkers hero power.