A downloadable mod

Last updated August 16th, 2023

Update 8/16/23

  • Updated Polish translation

Update 6/16/22

  • Updated for compatibility with the new patch

Update 7/15/20

  • Added Spanish translations from plumbello

This mod adds a set of new spells that even the Sages fear! These spells allow Spellcasters to spread pain and misery for their own benefit or just their amusement.

These spells all belong to the Untamed school of magic. Spellcasters need to be rank 4 (Master) in order to learn them, but not all of the regular methods will work. The Sages have tried to keep these spells a secret and won’t teach them to your Sims, nor will your Sims be able to discover these through normal practice. Some collectors may still have the old tomes and could be willing to part with them for a high price. Inflicting pain on others by winning a duel may allow your Sim to discover these dark spells. 

This mod requires the Spellbook Injector mod by r3m & Simsonian Library in order to show up in game.

Spells and Outcomes 

Note: For all spells listed here, Sims with the Good trait will get a +5 Sad moodlet for 7 hours upon successfully casting it.


Siphon the vitality of another Sim to restore your own energy.

Note: This spell generates more charge than normal! (80 points instead of the standard 40)

Standard Success

  • The target Sim loses 150 points of Energy and becomes Dazed, while your Sim gains 75 points of Energy and becomes Energized.

Charged Success 

  • Same as above but your Sim gains 150 points of Energy instead.


  • Your Sim loses 150 points of Energy and becomes Dazed.


(requires Seasons) 

Summon a swarm of angry bees to attack another Sim.

Standard Success

  • Your Sim will send off a swarm of angry bees to attack the target Sim and laugh. The target Sim will become Uncomfortable.

Charged Success 

  • In addition to the above, your Sim will also receive honey in their inventory.


  • Your Sim will be attacked by bees instead.


(requires Get to Work)

Inflict sickness and malady on another Sim.

Standard Success

  • The target Sim becomes Uncomfortable for 30 minutes before developing a sickness.  

Charged Success 

  • Same as above, but the sickness is guaranteed to be more severe and they have a 50% chance of developing Triple Threat, a particularly nasty illness.


  • Your Sim becomes sick instead.

Grim Bargain 

Draw on your own life-force to replenish their needs, but at what cost?

Note: This spell generates more charge than normal! (80 points instead of the standard 40)

Note: While Teens are able to learn this spell for later, only Young Adults and older are able to cast it.

Standard Success

  • All of your Sim’s needs are instantly filled, but there will be consequences.

Charged Success 

  • Same results as standard.


  • All of your Sim’s needs are lowered to -30. 

Addon - Brute Force Duel Options 

This is not a spell but an addon that will help your Sims learn the spells in this mod. If a Sim knows every spell from the unmodded game, they will ordinarily be locked out of "Duels for Knowledge" with other Sims. Since dueling is one of the more reliable ways of learning these spells, that can be pretty inconvenient. This addon makes it so your Sims can still duel at least until they learn all the Forbidden Spells.
Note: this does not apply to all custom spells from other mods


German (thank you, Bonxie!)
Portuguese (thank you, Mike Rangel!)
Italian (thank you, littledica!)
French (thank you, Seyjin!)
Polish (thank you, garixer and Aarathiel!)
Chinese (thank you, Tina!)
Russian (thank you, Shigara!)
Spanish (thank you, plumbello!)

New translations are always welcome!


This mod requires the Spellbook Injector mod and the Realm of Magic game pack. Additionally, the Melliferate spell requires the Seasons expansion pack, and the Miasma spell requires the Get to Work expansion pack.

Special Thanks

Zerbu for creating the Mod Constructor V4
Andrew and The Sims 4 Studio team for making Sims 4 Studio
r3m for making the Spellbook Injector mod and Simsonian Library for updating it
Alphabetsmells/LeRoiDeTout for help creating the script portion of this mod
and the greater The Sims 4 creator community for their continuous help and support throughout the whole modding process

Discord Server

For bug reports, live troubleshooting, discussion of my mods, and general chit-chat, please join us on the Sims After Dark Discord server. It is a joint mod support server for LeRoiDeToutShinobu NoxNC4T/Keke, and myself. 

Join us here!

Supporting My Mods

This mod and all of my others are free to download and will remain so. If you'd like to support their continued development, you can donate to my Patreon. I occasionally post progress updates and exclusive access to beta versions of my newer mods.

Become a Patron!

StatusIn development
CategoryGame mod
Rated 4.5 out of 5 stars
(2 total ratings)
TagsMagic, mod, Sims 4, spells


[Kuttoe] ForbiddenSpells.zip 335 kB

Install instructions

Add the script file to your mod folder or a subfolder which is only one folder deep. Add as many of the package files as you desire to your mod folder or any subfolder. For organization, it is usually better to keep the files together, but not strictly required.


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Umm How Do Unlock The Spells? I Have Seasons And Get To Work.


You need Realm of Magic to use this mod.

I do have it I mean how do I unlock the spells

Check the spellbook shops regularly for tomes or win duels for knowledge.

this mod still works?

Yes. Are you having any issues with it?

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Do you think you could either make a custom romance spell? or alter infatuate so that a: the castor can make the target fall in love with them? or idk have it have longer lasting effects? id like to be able to have my bad boy spellcastor be able to force people to fall in love with him.  but it only lets you make 2 other random sims fall in love...

I'm currently not making any more custom spells, as the spellbook injector has been getting more unstable over time and the original creator is not around. Especially for Mac computers, some players are not able to use more than 4 spells and some players can't even use 1.

@kuttoe is it any way to get rid of the grim bargain spell from you're sim? if not can you make one, if a sim doesn't use the Untamed magic for a couple of days or magic at all it should slowly go away


Do you mean unlearn the spell or get rid of the effects? There's no way to unlearn the spell other than remove the mod. The effects of the spell up to level 4 will completely go away after about a day per level if you stop casting Grim Bargain. If you reach level 5, the effects are permanent, and will not go away unless you use cheats to remove the trait or uninstall the mod. 

@kuttoe you should create a locator spell for witches... To perform dispel which needs to get the blood of another Sim no matter occult They’re from and to find the spell that way if the spell is done correctly it locates all family members in that family tree

Unfortunately, there is a group of players, particularly people using Macs, who get very strange bugs and errors when using the Spellbook Injector. It typically happens with people who have more than 3 spells installed. As r3m, the creator of the injector, has not been around for a while in order to update the script, I do not want to exacerbate the problem by creating any new spells at this time. 

Hello Kuttoe! I translated this mod to Russian. Can i send you it on Discord?

Added them to the mod now! Thanks for your patience, and thanks for sending it to me! :)

Will you be adding a new dark spells anytime soon?

Hello Kutto, I offer you my FR translation for the mod "Incognito Spell". It's very difficult to connect on MTS and to contact you :-(


Hello, and thank you for the translation! I will get to work adding this to the mod.

I'm not sure why MTS is giving you problems. I have my inbox open there. If it continues to be an issue, contacting me here is fine and there's always Discord, too.

Great, what's your discord, please? :-)


Hey Kuttoe, i translated this amazing mod to Portuguese (Brazil). I want send to you. How i do it? i don't find your email...

Hello Mike, thank you for your kind words and the translation! You can send me the file directly on Discord if you have an account, or upload it to a sharing service and post the link here or DM me on ModTheSims.

okay, this the link https://www.mediafire.com/file/zdy8q583krvf8u1/%5BKuttoe%5D_ForbiddenSpells_-_Po...

Thanks! I have now added it to the mod.

(2 edits)

I just recently bought all the expansions; game packs and stuff packs. Haven't had played; since the sims 4 base game  came out. It is mods like this that helped encourage me to play again. Excellent works on the forbidden spells.  These forbidden spells; really work well for my two evil spellcasters. Just wondering; you have any further plans in store for this amazingly epic mod? If not; just wondering.  Regardless; I am extremely thankful for what you have bestowed upon us.  Thank you sir/or madam

Thank you for the kind words. I'm glad you are enjoying the mod! I am currently working on other spells and mods in between playing University, but nothing is currently planned for this particular mod pack. If I get any more spell ideas which are thematically appropriate for it, I will surely add them here. 

(2 edits)

You are very welcome and thank you yet again. Ooo new spells and mods eh? Spells are always welcome. I can't wait to see what you have planned out for this. I will be keeping my eyes peeled.  Can not wait.

When I put these spells into my game, it deletes the duplicato spell from the pie menu somehow. 

Thank you very much for the report! That was a pretty serious bug. It should now be fixed in the new version I just uploaded.

No problem. Thank you so much for the quick fix!