GG Spells needs the following mods to work:

Iron's spells 'n spellbooks
T.O Magic
Roaring
L_Ender's Cataclysm
Cataclysm Spellbooks
Curios API

Currently, there is a major incompatibility issue between Cataclysm and T.O Magic. This mod resolves the problem until the developers fix the integrations. IT DOES NOT FIX EVERY PROBLEM, ONLY THE CRITICALS  

BielGG's Spells Addon is a mod that focuses heavily on integrating the magical world of "Iron's Spells" with the dark power of "Roaring." This includes a new magic school called "Shadow," featuring 10 spells and its own dedicated Spellbook!

"Roaring" items, such as "The Roaring Blade" and "Shadow Mantle," have been updated to support the Shadow magic school.

The mod also includes two extra spells called "Mirroring" and "The Final Breath," which are just filler content from my original mod.

And yes, this entire mod is just a standalone port of the "Chaotic World Content" mod, also made by me.