This deck got a lot better after BODE.
Always prioritize searching out the Lord of the Heavenly Prison with Gallant Granite.
Remember that Lord of the Heavenly Prison also protects your opponents set cards so DPE cannot pop their face-downs including if you floodgate something.
Lord of the Heavenly Prison should almost always fetch Fusion Destiny or Shade Brigandine so that you can put more pressure on board.