Xixo is one of the top pro players on the scene, and he is known for his 
Shaman decks. This Xixo Aggro Shaman Deck is the same list as he has been using on ladder and taking to some tournaments.
It’s a pretty typical aggro Shaman. The Thing from Below‘s give you a some options to add a couple of rounds by taunting up compared to the decklists not carrying these.
Mulligan for Tunnel Trogg, Lightning Bolts, and Finley Mrrgglton to get off to a fast start and there are few decks that can keep up. Learn when to SMOrc and when to trade. But if in doubt, always go face! 🙂