Basically your low cost cards and card draw because your hand will be low from using the quest. You want to keep mirage caller is you have a Crystalline Oracle, egg, or hoarder in your hand too.
This is an underrated deck type for the early Meta. The main players on this meme team are the devilsaur egg mixed with with any replication card (Herald Volazj or Mirage Caller), and or buffing the eggs with Defender of Argus. With the mass of death rattles on the board, the opponent doesn’t really use board clears and you are able to keep your minions on the board. This deck does extremely well against Quest Rogue as I have only lost one match against them. Overall, this is wan extremely good deck and I am running roughly an 80-90% win rate right now because so many people are playing rogue.