This is just the Skycrag throne deck with some strong shadow cards added. Exploit is really good in this event because most people are playing greedy midrange, control or combo. It also helps with hitting the important fourth and fifth power. Open Contract is just better Torch most of the time and and Carnosaur helps against aggro. Heavy Hail is even better in this format because you get a free unit at the start of the game, which will be primal most of the time, so you basically have a free discard for Hail.