What Bracket is my deck? Yshtola

Hello,

I'm fairly new to magic commander and recently changed my [[Y'shtola, Night's Blessed]] pre-con and added some more spell caster type cards. I just found out there's brackets but I don't know how to gauge my deck yet.

https://moxfield.com/decks/hRESexjnL0Snxq-i1JqknQ

Any help is appreciated or any suggestions on how to make my deck better. Thanks!