I kind of skimmed over the other replies and skipped to the last revision of your deck because I have class in a few moments. My professor is actually like 5 feet away from me explaining something to another student. I would've had more time if I didn't have other threads to respond to.
Have you tried
Unwind/
Rewind to stop people who try to stop you from going off, while adding to your storm count and essentially being free? I know 4 mana investment is steep even if you do get it back right after, but 3 mana is doable. I'd definitely consider
unwind at least.
Also, no infinite combos because they are too powerful for your playgroup, but I have found if you have 3+ card combo, it isn't too overpowered for a more competitive (but still casual) playgroup. Like I had infinite goblins with
Krenko, Mob Boss, Skirk, Fire Marshall and
Aggravated Assault. It wasn't a reliable way to win and didn't even know I could do that until I had all the pieces on the board. If you have enchantment OR creature removal at instant speed, it fizzles out.
With that thought in mind, what about adding
copy artifact to make infinite swans with
isochron scepter and
dramatic reversal and
swan song?
Now my classmate is showing me what my professor just told him. Shit class starts in one minute. Bye.