Rastakhan's Rumble launches this december guys! Check out the legendary for Shamans:

Krag'wa, the Frog (cost 6)(4/6 beast)
battle cry: return all spells you played last turn to your hand.

check out the full Reveal video here:

https://www.youtube.com/watch?v=6u5Wr_7BLbQ&feature=youtu.be