@TS1299
It's funny you should bring this up as only yesterday I was thinking about The spell injector mod which was created by R3m over at mod the sims which has not been updated in a while which is a shame because I remember using several ROM mods alongside the spell injector that worked very well and gave us a lot more magic play to enjoy.
https://modthesims.info/d/633665/the-spellbook-injector.html
LittleMSam has several ROM mods I like to use and one is called Improved practical magic spells and part of this mod has an optional add on spell that requires the R3m injector to use it so over the last few patches I have simply avoided that add on when patching my game because I know the injector mod is outdated however LittleMsSam is very good at updating other creators mods that have left modding and I keep thinking I should get in touch with her to see if she has any further information so your post has prompted me to do that and I will come back if I receive an answer.
This is the mod I am referring to. scroll down towards the bottom of the page
https://littlemssam.tumblr.com/post/188473485983/improved-practical-spells-this-mod-tweaks-random
there is also a better familiars mod
https://littlemssam.tumblr.com/post/187739130958/better-familiars-realm-of-magic-this-mods-adds
Herbalism | New Potions
https://littlemssam.tumblr.com/post/175409443318/herbalism-new-potions-this-mods-adds-new
Zero also has some great ROM mods that uses Scumbumbo's XLM injector mod which is kindly updated by @Triplis and according to several players that are using it after the latest patch report it is working fine so far. Maybe @triplis could help with the answers you are looking for regards anew injector?
https://scumbumbomods.com/xml-injector
while Zeros ROM mods might not specifically deal with new spells there are some good mods that take care of the quirks of the way the game deals with spellcasters and the magic realm. I do believe there is a mod or two regarding herbalism so scroll through and see if there is anything you like.
https://www.patreon.com/zer0_Mods_
I am afraid I cannot speak to anything about Eco living Naps as that pack almost destroyed my game until I modded everything out although I have a reasonable working relationship with community spaces now :)
I understand you are probably looking for something more specific than I have mentioned but I think this is the closest I have got towards my ROM wishes so far :)
EDIT LittleMsSam has tested r3m's The Spellbook Injector and for her own mod Improved Practical Spells add on that requires this mod works fine. She did say "the Spell Injector has an issue with MACs. Windows works fine but some MAC Users can have issues. Maybe it is that what those ppl mean"
