Basically you want to finish your Quest and keep the reward in your hand. Then play Majordormo Executus and wait for it to die. Then with your quest reward you can make your hero 40 health.
There are very expensive cards in this deck you can substitute the Death Knight with another board clear/heal
Get Black Rock mountain for Major Executus + Emperor Thaurissan. Open Descent of dragons packs to get the other epics/legendaries and the rest should cost likes 3000 dust which should be only a drop of water compared to your wallet.
This was made 4/12/2019 so if any better invoke cards are made put it into this deck