Xp Formula
In vanilla Minecraft, there's a peculiarity: with each new level, the amount of experience required to reach it increases. However, enchanting consumes character levels rather than experience points. Because of this, enchanting becomes increasingly inefficient as the character level rises.
The Xp Formula mod solves this problem by allowing customization of the experience gain formula. You can adjust the amount of experience required to level up. Through configuration settings, you can set a fixed experience value for levels beyond a certain point or even make it so that higher levels require progressively less experience.