It's a very nice deck! But I would add a Leader, like Ambre or Eyrik instead of Petra. Then I would add Uranus in the place of Eris/Jautya, because the more damage reducers, the more mistakes you can get away with without losing the game. Murray is actually a very clever choice in death match and in survivor. He can get you a free life gap against the common damage reducers and his high power can counter your opponent without any issues. Good luck!