I look at lists like this and just wonder if JacoDrazi isn't just better and possibly the same cost. But that is not why you are asking for help....
I think that mental Misstep, dryad militant, and Thorn of Amethyst should be considered. These cards are possible on turn one. point being is you NEED a turn one play. Dryad militant turns off Baby Jace, Snapcaster, cabal therapies, dread returns, and delve spells relatively well. Your biggest fear with this deck is Mentor and STPs (and maybe Oath.) MM helps against one of those. Mentor is just going to steam roll the deck. You have no way to come back from an early Mentor other than your STPs.
The other problem with a deck like this is that it is an anti-meta deck. What decks do you play against in your area or online? You can tune this deck to have an edge against Shops by playing maindeck Kataki and Null Rod. Against blue decks I would have 4 spirit of the labyrinths and 4 Thalia 1.0.
Just my 2 cents. Good luck!