Okay people. Therefore, the Fortuneteller sells cards for different classes in WoW. To summon this NPC you need this kind of item
wich looks like cloak, Zayle, Shadow Cloak. Zayle, Shadow Cloak gives 5 new recipes to play with and we see 5 cards on the table and 5 chairs in the room in trailer. We also have 5 chapters at new adventure. Looks like Fortuneteller is one of the corresponding deck recipes hero and we are missing 4 more.
At new Arena drafting system will have next 5 addons: Naxxramas, Old Gods, Witchwood, Mean Streets of Gadgetzan and maybe the newest expansion. So maybe 5 cards on the table are corresponding 5 new Arena draft expansions?..If that is, we see 1 new expansion and K&C wich is not corresponding to the new Arena draft system.
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You don't gain any net dust, though.
Regular Baku gives you a 1600 dust refund plus 400 if you dust him = 2000 dust. The math for an extra golden copy is: 3200 (refund) - 3200 (crafting cost) + 1600 (dust golden one) + 400 (dust regular one) = 2000 dust
Crafting the extra golden copy now only gives you a discount on the upgrade if you want to keep the golden one.