Take out artifacts or move to SB. Take out Mire and Carnicarium. Playtest.
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Most of your creatures are CMC of 3 with a few in the 2 or 4 section. You need more 1 mana drops or else the game control goes to someone else. I know you are focusing on knights in a tribal situation. You should go mono white with that, and put in some white weenies.
I like that you have one ofs in your deck and lots of lower CMC cards. What is your win?