While the deck has potential, it needs focus. You should be able to sum up a deck in one or two sentences.
Some immediate things that can help is to remove the black splash that you added. Currently, neither
Farbog Revenant nor
Accursed Spirit are helping you much, and its not really worth adding a color to just use
Pale Rider of Trostad. In addition, your mana curve is rather high, and
Drogskol Cavalry is rather bad. Also, considering how few non-creature spells you added, I would remove the creatures with Prowess. From there, you can go anywhere, but I would recommend cutting cards until you have 60. Its hard to cut cards you like, but every card you add above 60 is one that is clogging your deck.
Good Luck with the deck, Spirits are fun to build.
PS: If you are building Spirit tribal, I would recommend
https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=244773.