ChaoticKarmaChaoticKarma is a mod designed by myself and kingluke_ a long while ago, heavily influenced by Fallout.
It adds a karma system to the game, with two types, positive and negative. Each type of karma has its own perks, constant buffs, and events, random occurrences.
Positive karma gives the player negative buffs and positive events, while negative karma gives positive buffs and negative events, in order to inspire different types of play (naughty or nice, depending on what you want).
Currently it only adds a few perks and events, however it has a powerful API to allow for mods to add their own karma events and perks if they desire. Although, I do have plans to add more events and perks...
The typical links:
Detailed documentation and a changelog is available at the FTB Gamepedia site.
Downloads are at CurseForge.
Source code and issue tracking is over at GitHub.