A server-side Hearthstone update is going out this Thursday, February 13 that focuses on Battlegrounds balance and [Hearthstone Card (Galakrond the Nightmare) Not Found].

Quote From Chris Sierra

Greetings Friends!  

We have a small 16.2.4 server-side patch going live tomorrow with the following changes:  

  • Floating Watcher is moving from Tavern Tier 3 → Tavern Tier 4
  • Fixed an issue that caused Galakrond the Nightmare's cost-reduction priority to negate the cost-increase effects of cards such as Boompistol Bully and Loatheb.  

Once these changes have gone live, I'll be sure to update this thread!