Apotheosis x Iron's Spellbooks Compat

An addon creating integration between Apotheosis and Iron's Spells n' Spellbooks, adding new affixes, gems, and other compatibility for spellcasters of all kinds.

Features:

Adds 2 new reforge/loot categories, Staffs, applicable to any item extending Iron's Spells n' Spellbooks' CastingItem, and reforgable Spellbooks. These items can receive new affixes specific to spellcasting.
Attribute Affixes like "+X% Fire Spell Power". These are intelligently filtered - gear will only receive affixes matching the spell school(s) detected from its existing attributes (e.g., a staff with Fire attributes can roll Fire affixes, but not Ice affixes). Supports items with multiple schools and upgrade orbs.
"Spell Effect" Affixes, similar to Apotheosis' Mob Effect affixes, but triggered by spell actions: On Spell Heal (Self/Target) and On Spell Damage (Self/Target).
"Cast Spell" Affixes, automatically cast a spell for no mana (the affix itself has a cooldown), triggered on melee attack, ranged attack, spell damage/heal, or when attacked (based on the type of gear).
"Spell Level" Affixes, increase the level of spells for a spell school. Like attribute affixes, these are filtered by school to only apply to gear with matching attributes.
"Mana Cost" Affixes, decrease the mana cost of spells for a spell school. Also intelligently filtered.
Adds a Telepathic affix for staffs, and adds special compatibility for mob drops to teleport to you when slain by magic.
Introduces several new Gems themed around various spell schools, providing spell power, resistances, and other thematic bonuses.

Only for NeoForge, 1.21.1. No backports will be made.
(but 1.20.1 Forge players might like Fallen Gems & Affixes!)

Compatibility:

Built-in optional support for several Iron's addons, adding gems and affixes for their custom schools and spells:

Abyssal and Sand schools from Cataclysm Spellbooks
Melody school from Tunes n Tomes
Wind school from SnackPirate's Aeromancy Additions
Symmetry and Spirit schools from Magic From The East
Radiance and Shadow schools from Hazen n' Stuff
Hydro and Technomancy schools from Ace's Spell Utils
Aero and Necro schools from Monsters Spellbooks
Occult school from Discerning the Eldritch
Spellblade school from Ender's Spells and Stuff Requiem

If you don't see your addon on this list, feel free to submit a PR or a feature request on Github. You could also bundle the affixes/gems yourself (somewhat preferred, as maintaining compat for so many other addons will become time consuming) - If you need help with that, ask on Discord!