This is the Neviilz Yogg Gadgetzan Tempo Mage Deck he was playing on 
stream. I’m not sure about Servant of Yogg-Saron, that card has always done me wrong. But it’s a fun deck like most of the decks he plays.
It’s still good for laddering though. You can take this deck to legend if you’re a decent player. Oh, and if you have some luck on your side of course.