Tombs of Terror! – It’s time to put a stop to the League of E.V.I.L.’s pernicious plague-riddled plans. Hearthstone’s newest solo adventure is launching this September!
As mentioned it is the new single player content - so the card back is the reward for pre-purchase of this.
I can't find any information about "tombs of terror" in hearthstone (maybe name of next expansion?).
I assume it's the SoU single player content.
Description said that this is pre-purchase reward
And?
This is definitely not a single-player content. And there is no info about Tombs of Terror
I'm confused, what makes you think this is definitely not single player content?
Tombs of Terror is mentioned about halfway down on the patch notes news article:
https://www.hearthpwn.com/news/6880-patch-15-0-new-sou-cards-added-fixes-improvements
As mentioned it is the new single player content - so the card back is the reward for pre-purchase of this.
Yesterday's Hearthstone Update
The following is cut and pasted from the info provided by Blizzard.
edit: Ninja'd
"There is no spoon"
Okay, thanks to all for help!