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So lunatic is fruitful.The extra lunatic choices pretty much all give you extra money or execute people (or both, in the case of the petitioner approaches event). If you don't mind the stat changes and health malus feel free to become a lunatic, nobody deposes you or anything.
Open the game files in a program and search across all files for lunaticHow will we find list of events which are associated Lunatic Trait?
There is not any info on wiki.