It is one of the most emblematic characters in World of Warcraft and Hearthstone who becomes the new alternative hero for this Descent of Dragons expansion! He is one of the 5 dragon aspects with Alexstraza, Ysera, Malygos and Nozdormu and fought with them Galakrond who is back today on Hearthstone. He was long loyal to his fellow dragons, but he went mad because of the very old gods and ended up betraying them.
He's the new alternative hero Warrior, which will be available with the Descent of Dragons expansion. You can get it by purshasing the pre-order at $79,99. You'll also get to his exclusive card back: The Shattering.