There are 3 kinds of Mystic Weapon and an Armor each weapon and armor have element type and its power is according to that element. Elements stones are unique items that use for crafting different Mystic Weapon. Elements Stones are very unique and expensive, you can have a chance to buy them in wandering trader or have chance to get them in some specific loot such as unique chest loot like burried treasure, chest in some village or by some entity's drop loot. This update fixed weapons that cannot work after the update of Minecraft (1.18.10) Crescent Axe (Light) change its passive ability. The entity it will hit will now randomly teleported to nearby area