



XP Theory adds new experience systems to all living entities, allowing mobs to absorb and use experience for size and health. XP Theory also adds the Enchanter from MCD with new mob enchantments.
Content
SpoilerThe Enchanter is a new illager mob that can spawn in Mansions and high-tier raids. Enchanters will apply mob enchants to mobs that share the same target as the Enchanter.
Mob Enchants can be applied to any mob as well as the player. Enhancing Books can apply these enchantments, while Cleansing Books clear all enchants.
- Melee - increased melee damage
- Protection - increased base armor
- Quick - increased movement speed
- Steadfast - increased base knockback resistance
- Hearth - natural regeneration
- Fire Aspect - fire aspect
- Deflect - reduced arrow damage
- Feather Falling - reduced fall damage
- Swiftswing - reduced invulnerability frames on targets
- Slime Split - mobs duplicate into their baby counterpart on death
- Thorns - thorns
- Gravital - attracts target towards enchanted
- Frenzied - increased movement speed as health lowers
- Radiance - heals mobs nearby when taking damage
- Freezing - freezes target
- Leeching - heals mob based on damage applied
- Committed - increased attack damage as target's health lowers
- Cowardice - increased attack damage while full health
- Bombastic - creates explosion on death
Ancient Mobs have a .125% chance to spawn ancient. Ancient mobs have an increased xp yield as well as naturally high enchantments and a golden glint.
Mobs can absorb experience to increase their health and size. Mobs drop their stored experience.
Join the Redev discord for developments and updates
Happy exploring!
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as xp_theory-1.1.1-forge-1.20.1.jar — drop this file into the mods folder
- Download size: 283 KB
- Download link checked 8 Sept 2026 — working
These come from our own check of the pack file, not from the source page.