Help Me Make This Better - Grave Dragon Death Deck - Gods Unchained

GU Decks is calling this Casino Death, but it really isn't. I am calling it Grave Dragon Death. I would like to get opinions on how to improve this deck, I really want to make it viable. This video is 3 consecutive games, 1 long win, 1 quick win and 1 loss to Food Chain Nature. It typically beats Food Chain, but bad draws will lose against anyone.
Here is the deck code:
gudecks.com/decks/GU_1_1_BEwB...
GU_1_1_CCcCCcGAFMCKMCKBEwBEwKCBMCWMCXMCNMCNMCRMCRIAJMCSMCSMCMMCMMCQMCQMCkCAPCAPGAdMCaMCUMCcMCIKDO