On Luna Earth there are hundreds of custom enchantments with varying effects and uses. You can purchase custom enchantment books from the Custom Enchants NPC in spawn for experience points.
Use /enchants to see a list of all possible enchantments in-game.
All equipment can hold up to 3 custom enchantments. In order to exceed this limitation, you can purchase Enchant Slot Increasers from the /expshop. Using these increasers, the maximum enchantment count can be pushed to 6.