Trump has been hard at work building decks with cards from the last wing in the adventure One Night in Karazhan. This is the Trump Burgle Rogue Deck w Ethereal Peddler he was using on stream.
You steal your opponent’s class cards by using Swashburglar, Undercity Huckster, and Burgle. Then play Ethereal Peddler to reduce all the other class cards by 2 mana.
This is usually enough to have a huge tempo swing turn. You will often have cards reduced to 0 mana and will even pick up some synergy. The most annoying part for your opponent is that they can’t play around what they don’t know is coming. 🙂