This is the Savjz N’Zoth Dragon Warrior deck he was playing on stream. Dragon Warrior is all over the ladder right now and is one of the premium Tier one decks. Savjz is an expert at making control decks, and especially taking other decks and giving them more control and a stronger mid to late game.
This is a fun deck to play and he was doing really well with it. Give it a try and see how you get on.