loubagel.com/blog/sunnyside-smash-dev-blog-1
On the blog post above, I posted the project as-is after the game dev stream, which the full video is linked there as well.
The blog post also includes screenshots of the event sheet and notes on each event. So it isn't exactly like a tutorial but if you want to implement a similar mechanic it could be helpful.
On that note, feel free to ask any questions if you are looking to implement something similar.
It was only about 1.5 hours spent on this so nothing too advanced.