Crafting with…Courtney! Episode 15
Rune Arms all contain a certain amount of crafting potential; in this case the potential is +3. That means you can craft any shard up to a +3 potential onto it! Keep in mind that adding to the potential of the Rune Arm can dramatically increase the minimum level of an item, so be careful! Also note that you can only apply a shard to a Rune Arm once! The Rune Arm cannot be deconstructed, and the shard cannot be replaced, so keep that in mind when preparing to craft onto it!