I am currently at lesson 50. So I build this mod with events.

Features:

- When you hit a villager you get Nausea effect and a message.

- When you kill a mob you get random item

- When a mob hit you you starts levitating

Code is attached.

https://gist.github.com/iammohdzaki/7adb878c498e2418276c7abe9dab06de