Hello here is an updated version of this mod under MIT to allow for its use on a more modern modloader this is an 1.21.1 neoforge port of the original mod by the same name i have taken the original mod and updated it to work with modern mod loaders and Minecraft versions

Description pulled from the original modpage

Epic Fight x Iron's Spells: Enhanced Animations

(Formerly Epic Fight x Iron's Spells Animation Fix)

If you updated to 2.1.8 and newer from an older version please delete the mod config file (efiscompat.toml) so it can regenerate the correct config

Newest update added datapack support to customize animation of spells

This mod adds custom spellcasting animations for Iron's Spellbook through Epic Fight's system. Required on both Client and Server.

IMPORTANT: Turn off both Iron's Spell client config as shown below or you will see your face in first-person when casting

irons_spellbooks-client.toml [Animations]
#What to render in first person while casting.
showFirstPersonArms = false
showFirstPersonItems = false

Features:

Multiple casting animations, with unique staff variants when holding staff in main hand.
Configurable options for defining staff items and hiding held items during animations.
Support spell cancelling when performing various Epic Fight's skill like guarding, rolling,...
Fully configurabled for almost all of the features

Credits to the original creator
YukamiNeeSan
https://www.curseforge.com/minecraft/mc-mods/epic-fight-x-irons-spells-enhanced-animations