I have similar decks to this one that use more than two colors but I do have some advice on making it run better.
Firstly take Everything that is not BFZ out of the deck and only focus on this set. The more focused that this deck is the better. Anything not BFZ just side board and maybe board it for later.
Next Focus on the
retreat to emeria and
retreat to hagra enchantments that you have in this deck. If you add
evolving wilds to this deck then you can get multiple landfall triggers in the same turn, pop out kor ALLY tokens, and make your opponent lose life in the process. Also if you add
vampiric rites to this deck you can sacrifice the kor tokens for life and draw power. Just these 3 enchantments will give your deck strength and consistency, especially if you have
kalastria healer and
zulaport cutthroat on the filed. This will cause multiple triggers in the same turn and leave your opponent hurting for health.
Lastly as far as creatures go you should really consider adding
bloodbond vampire,
nirkana assassin, and removing the
cliffside lookout for
defiant bloodlord. Just some ideas that may help you in the long run.