This is a mod that adds some useful items. These items, which can make you upgrade your iron armor to diamond armor more fast, store experience, dis enchanting, repair your item, exchange material, and so on.

Diamond ingot

You can use smithing table upgrade your iron armor with it.

Repair Powder

put all your armor on an armor stand, then drop repair powder on it.

put tools on item frame, then drop repair powder on it.

Dis Enchant Tome

put your enchanted item (but not enchated book) on the ground, then drop dis enchant tome on it, it will consume the tome and you can get enchated book with the enchantments and an original item without enchantment.

XP Tome, XP Script

you can store your experience in it by right click, and the tome will get a damage. If the tome break, you will get back the experience you store, don't enchant or repair it or your will lost some experience.

Stone of Sage

you can use crafting table to translate an item into another with sage of stone, you can see the recipes in JEI。

Structure Eyes

you can use these eye to find structure like Eye of Ender