Charm of Fire?

I was playing early game as a mage and this is the first time I have ever seen this accessory. I tested it (with magic weapons and a bow) and it doesn’t seem to do anything. Has anyone seen this before, and if so, what does it do?

I was playing early game as a mage and this is the first time I have ever seen this accessory. I tested it (with magic weapons and a bow) and it doesn’t seem to do anything. Has anyone seen this before, and if so, what does it do?