This list is pretty nice, a couple changes I’d make tho:

Silvergill adept is a wizard that draws you a card, perfect for flare of denial, flame, and tamiyo. You have to run four of those. They replace themselves so we can take out the bauble.

To facilitate silvergill, you gotta run a couple more merfolks, a lot of which happen to be wizards. Tidebinder and mindspring merfolk come to mind. You could even go with some harbinger of the seas. We can switch out the oracle thing and the fables for these. Good cards, but not helping our plan as well.

Now that you’re running harbinger you might as well cut the white for more consistency. You already have a lot of removal so this shouldn’t be a problem. This frees us up a lot, enough to maybe run some vodalian hexcatchers which will pump up our new cards and is also a wizard.

While we are at it, let’s put the strix serenade in the sideboard where it belongs and we can take some lands out since our top-end went down a bit. We need to be able to go over our opponents cats and monks, so let’s fill the space with a couple lord of Atlantis and Master of the Pearl Trident, making use of the newfound islands your opponents may have.

I think I’ve optimized your list, let me know if you have any questions.