https://www.curseforge.com/minecraft/mc-mods/goety
Played it in another modpack and kinda liked it - progression is fun and utilises mob spawners in a different way than normal.
It also adds magic based bosses - currently only the archevoker is the true magic based boss (or mini boss) i can think off.
Also figured there's not enough magic gameplay - the iron spellbooks infusion is kinda niche but hey more magic won't hurt
