Source: Hearthstone Top Decks Section with updated version posted by Kolento to imgur (Image 9, changes made was Dark Iron Dwarf for Defender of Argus)
I was expecting Mal'ganis like we usually see for Demon decks but Kolento only ran Doomguard and Lord Jaraxxus as the only demons for Voidcaller's deathrattle. You can watch the deck in action from his Twitch past broadcast video. Some of the interesting combos in the deck are Void Terror + Sylvanas Windrunner and Abusive Sergeant and Dark Iron Dwarf on enemy minions to combo with Big Game Hunter.
