Hearthstone Concoctions | Dreadful, Slimy and Bubbling

"Bubbling Concoction" and "Slimy Concoction" Artist: Stefan Bogdasarov
https://www.artstation.com/goddasaurus

"Dreadful Concoction" Artist: Sergey SerSpiriT
https://www.artstation.com/serspirit

Concoctions were introduced in the March of the Lich King expansion for Hearthstone.