This is Chrono Ark but 505Error taken to the extreme.
Level Up: The effects of 505Error are activated by default. However, the first 3 skills are gone meaning you choose between 3 random skills from all investigators.
Skill Book, Infinite Skill Book: Scrambled to show random Investigator skills.
Golden Skill Book: Shows you random Investigator Rare Skills.
Chaos Mode: Include every existing skill in the game (such as enemy skills and item effects) into the selection pool. Gets silly quickly. (Default OFF)
Healing 101: Gives 2 Healing 101 at the start of the game to help support characters pick up heal skills. (Default OFF)
(Go to BepInEx -> config -> open in Notepad: org.windy.chronoark.cardmod.randomskillmod.cfg)