Improving your character’s items in Aion will often carry with it a random and destructive element. You should be aware of the risks before trying to use all available means to enhance their powers – and that the risk is by design.
Enchantment Stones and Manastones
First of all, Enchanting gear (using Enchantment Stones) is intended to be a challenging task, as it can greatly benefit your character. Enchantment Stones can be very expensive, and there is a chance they can fail each time. The same is true of Manastones, which have different benefits and a random chance of success and failure.
You might want to check with other players in-game, or search the forums, to make sure you are using the appropriate-level Enchantment Stones for the items you're trying to enchant. I know there are several players out there that have spent a lot of time and Kinah experimenting with enchanting. These players often share their results regarding what type of Enchantment Stones were most successful for certain items.
Armsfusion and Godstones
When you combine two weapons using the Armsfusion system, the resulting Armfused item contains most of the attributes from Primary weapon and some attributes of secondary weapon.