Above all else: remember - Tomorrow's ability is a replacement effect - you technically do not draw any cards while he's out. Jace`s Erasure wont trigger.Jace Beleren is a great idea - you're group-hugging, but taking *much* more advantage from it- you should also look at Jace, Memory Adept. I see a lot of card draw in here, but not much along the lines of a win condition. What!s your end-game? youve got 25 card slots to fill, so you should put some really heavy hitters, or some ridiculous lock-down in there. You also seem to have a little focus on artifacts in your deck, maybe throw a few more in. Also, you have like 4 things that give you no max hand size. For good measure, add an Elixir of Immortality, Sphynx of Uthuun, and Looter il-kor. Drop the glacial wall, maybe pick up Mnemonic wall. Arcane Denial is a good counterspell for multiplayer. Why is belltower sphynx in there? Good mill card, not a good control card. Now, if you wanna be a cockjuggler, make sure to get a Frozen Aether, Rhystic Study, and Azami. In general, look at replacing some of these with slightly more useful variants.
Permalink
Your deck is 70% blue to 30% black, but your land colors are 50/50 - that's unbalanced. Also, having 20 lands in a deck that is mostly 3-costs is a bit short, so you might want to include a few more. Perhaps touch on some card draw, and throw in a playset of Consuming Aberration.