What I've been wondering with this item is mainly why you don't use the chinese butterfly swords as the template of the icon, and instead you use what looks like a regular green sword with a butterfly looking handle. I mean don't get me wrong, the item's drawing looks very nice, but doesn't really seem appropriate to the idea of the item.

Here is a picture of butterfly swords for example that look interesting:


If you are going for the butterfly knife, then that would also seem more appropriate since it is a quick knife and can be associated with speed/agility etc.

An example of the knife :