Goety is a great magic mod but you feel the bosses are not challenging enough? I made this mod because while there are many mods that make vanilla bosses difficult, I have never seen a mod that makes mod bosses difficult.
Prerequisite Mods: Goety - The Dark Arts Damage command
CoFH Core
Changes
Vizier
Spawns with an iron axe of “sharpness” level V.
The spell “tooth” will be added to the Bitting spells.
The armor toughness of 10 to the defense of 12.
Projectiles will slow down the closer they get to him. The closer the projectile is to him, the slower it will be (like Gojo Satoru's Infinity).
Melee attacks on him will have their attack speed and power severely reduced for a short period of time.
He regenerates spontaneously.
Apostle
The name will always be “Apollyon” and the title will be “Ultimate”.
Double the natural regeneration speed.
If you are hit by an arrow, you will take additional magic damage.
The arrow burns the opponent.
The cooltime Inferno, and Invocation of Monolith have been eliminated.
Use two spells at the same time.
Hellfire and Tornado of Flames ignore invincibility and deal damage.
The servant's attack power increases to 11 for zombie piglins and 17 for zombie piglins brutes.
Inferno now burns surrounding mobs, and hellfire has a heal-sabotage effect on non-players.
Malgast freezes surrounding mobs.
L_ender's cataclysm version
https://www.curseforge.com/minecraft/mc-mods/cataclysm-apotheosis-addon
Illage and spillage version
https://www.curseforge.com/minecraft/mc-mods/illage-and-legend