In a Reddit Post Mike Donais, Principal Game Designer on Hearthstone confirmed that there will be a balance change soon and they will give more infos this week. (Source)
On his birthday yesterday he streamed with his Daughter Melodya.
For a second you could see a chat log they had with Jared Noel (former Hearthstone Analyst.)
In the Chat they mention 2 changes:
- Conjurer’s Calling being increased to 4 mana.
- Extra Arms being reverted to 3 mana.
Later in the Stream Mike also mention while playing Highlander Mage that “somebody should nerf Luna’s Pocket Galaxy”, beeing the second nerf to Mage.