1) Select 'new deck' to make a deck in your final slot. |--| 2) Select priest and click 'choose'. VERY QUICKLY AFTER THAT, click the 'new deck' button again before animations finish. |--| 3) It should prompt you to select a class again. However, Hearthstone thinks you should be building a deck right now, and you are softlocked. You must quit and re-open Hearthstone to continue. Patch: 4.0.0.10833 (LoE patch). Join the Hearthsim community for Hearthstone simulation, theorycrafting, science and reverse engineering:. Website:.