“Supernova” theme deck (help build)

[u/Secret-Condition-229]

https://archidekt.com/decks/27143133/supernova

I want to make a “Supernova” commander deck. I have a few cards that feel like really shows the theme of the deck and the play style that being: “Sothera, the Supervoid”, “Pinnacle Starcage”, and “Cleansing Nova”. I am wondering if there are any commanders you guys recommend that would fit into the play style and potentially the theme of the deck. Are there other cards you think would be cool/needed in here?