How about a faster win condition than Elixir of Immortality that is not a creature like Silumgar Monument:

Nephalia Drownyard

That way you dont waste any deck slots on a win condition. Id also recommend removing card disadvantage like Disperse for permanent answers.

The average converted mana cost of this deck is way too high. You will have to consider way more options in your first 2 turns; Modern is a fast format after all.

Both of the above commenters are right. If you're not going to have a creature base, then you need to do everything in your power to prevent the opponent from having one as well. To that end, you have little means of doing so, and what you do have has way too high of a cost mana-wise. I would highly recommend that you have lower mana cost cards like Fatal Push, Mana Leak, Extirpate, and Inquisition of Kozilek. Removal, counterspells, and hand attack are three things that you definitely need for a successful B/U control deck, and you have very little of all three. Since you're solely relying on control to win the game, you will also need card draw to pull the cards you want. Serum Visions is the card that people tend to go for, but there are many other options (the same can be said for everything that I have mentioned here).

I notice that you have artifacts dedicated to limiting how much damage is done to you in combat. I ask you, why be damaged at all? Propaganda would help with that immensely. You also have two artifacts that boosts creatures... which you don't have. A better artifact would be something like Isochron Scepter, which you could use to continuously play removal or counter spells.

Finally, I notice that you don't really have a win condition. Skywise Teachings really isn't going to work out too much, especially if you don't have low-CMC cards to allow the cost to make the tokens. Unfortunately, since you're not using creatures you are limited on options. Here are some to consider:

1. Discard, using cards like Liliana's Caress to deal direct life loss to the opponent.
2. Mill (which I despise but it works).
3. Lots of artifacts, ending with Tezzeret, Agent of Bolas's Ultimate.

Stuff like that. It's really up to you.

Hope this helps!

Thanks for all of the suggestions, unfortunately Propaganda is not modern legal, I did manage to considerably lower the average cost, add some draw and add some mill (it was the most convenient as I didn't have to change much to add it). I sideboarded the artifacts to make room for the Isochron Scepter and instants to imprint with it. Let me know if you like the changes and thanks again for the help!

I run a similar in style and function creatureless blue/black deck, it even has around the same average converted mana cost for the cards. People hate it because of how annoying it is, but it isn't the greatest deck. The spells that hurt the most cost the most usually, and if you add mana ramp to a deck like this you lose chances for your win condition.