There is not much you can tune if you want a colorless deck right now. But it is amazing to see it actually kind of works.
The 4 of Supply Cache is my new change to the deck, and is the part I am not quite sure about. It's possible my old version without market is better. Just put some copies of the market card in the main instead and hope to draw the correct one when needed.
The deck wins mostly by tempo. The best case scenario can be going second, turn 1 land, ditching two cards, turn 2 land, ditching two cards, fate into a power core and play a 7/7 alongside the power core, turn 3 land to play a 5/5 flyer together with another 7/7. This extreme example just tells you how fast this deck could be.
Alternatively, I also win with the 8 sites every now and then.
This may not be a super strong deck, but it is definitely one with a style. Have fun.