The next Hearthstone expansion, Saviors of Uldum, arrives August 6. Saviors brings 135 new cards to the game, including the Mogu Cultist. Play seven of those, and you'll summon the powerful Highkeeper Ra. See what that looks like in this gameplay clip.
Hearthstone: Saviors of Uldum New Card Gameplay - Mogu Cultist
Play seven Mogu Cultists, and you'll summon the powerful Highkeeper Ra.