XP-Plus let you use your XP for more than just enchants!
Crystals of utility: Heal yourself, get a Speed boost and Jump higher, get Resistance, Hase and Strength!
The Speed, Jump, Haste, Strength and Resistance crystals need to be activated for a one time cost of 30 Levels
The Healing crystal will heal you for 5 levels per use!
Crystals of Time: Set the time as you wish, day or night!
These crystal take 10 level per use.
Crystals of Weather: Set the weather as you wish, Clear sky or Rain!
These crystals take 5 levels per use
More information on the Wiki
Source code on Github
You may use this mod in any Modpack without limitation.
This mod requires Forge in order to work!