I have been trying to make a slower variant of quest rogue since the quest got nerfed. With sonya, I think this type of deck is finally viable. I have been updating the decklist over the last couple weeks and after a 12 game win streak from rank 5-3 I have finally zeroed in on what I believe to be the optimal decklist. The final decklist shown here is quite expensive and difficult to play, but extremely fun and actually quite powerful. If you already have all the cards for the more popular variant of quest rogue (quest, sonya, zola) then I would highly recommend spending some dust to craft valeera and shadowcasters if this deck interests you. Also note that zola is not strictly necessary, any of the suggested tech cards below should fit nicely as a replacement.

Win Condition:

The win condition for this deck is to complete The Caverns Below quest, and outvalue your opponent with an infinite army of 5/5 minions. Unlike a normal quest rogue, this deck has very limited burst potential. The deck also completes quest much slower than a typical quest rogue, giving slower decks time to draw their big board clears and taunts. Because of this, it is important to manage your resources to ensure that you have enough gas to maintain late game pressure after your board is cleared. The keys cards for maintaining late game pressure without losing resources are Valeera the Hollow, Shadowcaster, and Zola the Gorgon. the key combos in this deck revolve around using the valeera's deathknight card to let zola or shadowcaster replicate themselves indefinitely. For this reason versus slower decks it is important to save either one shadowvaster, or zola + a one drop (preferably boar). Note that the shadowcaster combo is significantly more powerful (allowing you to create 6 minions every turn), but requires an extra turn of setup where you only play 2 minions. The zola combo is less powerful (4 minions every turn) but requires no setup.

Reccomended tech card:

- mind control tech x1

Other notable tech cards:

- youthful brewmaster x1

- vilespine slayer x1

- southsea deckhand x1

- ironbeak owl x1

- fan of knives x1

- hungry crab x1