File:Cyanigosa HS.jpg

Summary
Artwork used by the HS Cyanigosa boss in Hearthstone: Rise of Shadows. Artwork by Eric Kenji Aoyagi: ArtStation page

Source

 * https://blizzard.gamespress.com/The-Dalaran-Heist-Press-Kit
 * https://www.artstation.com/artwork/N5Ky3D