This mod from Lucror makes every regular creature (non-daedra, non-undead) passive (does not attack you on sight). Installation--- 1. Extract the "Passive Wildlife Vvardenfell" Folder onto your desktop. 2. Drag and Drop the Data Files Folder
I know there's already Magicka regeneration mods out there, and health too - but I never quite liked the way they were done, so I went ahead and made my own (partly as scripting practice also) This one does both Health and Magicka, based on: