Nice! +1

Standstill depending on your meta might buy you a few turns or at least draw you some cards. Very good paired with Narset. Hesitation along those same lines.

As Foretold can be a great way to start free casting counters, then you spend mana on draw and wincons.

Arcane Laboratory might be used to "counter" any extra spells people have. You only have to worry about one spell a turn.

Mystic Remora and Rhystic Study seem like odd exclusions... any reason why you don't have them?

Lands: You mana base can use some work. Myriad Landscape can help ramp if you sacrifice turn 1. Boseiju, Who Shelters All can help prevent counter wars. Nykthos, Shrine to Nyx breaks even with azami but might not be great...

That's all I can think of! I built a Baral deck a while back: Mr. Blue Sky | Baral EDH. Check it out, you might find something you like!

Thanks for suggestions. Arcane Lab is definitely going to be considered.

Remora exclusion is meta specific tech- I face too many creatures to warrant a Fish. Rhystic is good but I'm just out of money right now. Will proxy though and I have no real reason to exclude it.

Hesitation is sweet in my meta. Will try to make room. Myriad Landscape makes sense too. I wanted to bring Nykthos in but with Pioneer becoming a thing it has become a bit too unaffordable. Will proxy and see how it works.

Thanks for taking the time out to comment :).

My primary two suggestions are Mana Drain and Mystic Remora. Have you ever considered Wash Out and Back to Basics? They're some of my favorite things for mono-blue.

Thanks for the suggestion!

Mana Drain is too expensive but I can proxy it. However, I don't want to piss off my playgroup too much and I do value FoW over it so that's why it's not there. Remora is purely a meta-specific exclusion because I play in a creature heavy meta so it doesn't do a lot before I have to sac it.

Wash Out is definitely interesting and I will consider it. BtB is another meta decision because most of us in our pod are too broke for nonbasics :/.