Fusion

Using any double-element armor will have a chance to yield an armor with either of the two elements. Using two dual element armors will greatly increase variety, but it will, consequently, vastly decrease the changes of acquiring the desired element combinations. They can also, be a result of a junk armor .You can find fused armors in the Dark Prince's Chest or in the Enchanted chest.

When fusing armor, you are not allowed to fuse the same elements. Fusing any combination of common and uncommon armor will always result in a rare armor with both elements, while fusing two rare or higher armors will result in a random rare or higher armor that has two of the elements of the fused armors. The fused armor can be one tier higher then the highest tier used to fuse, but it can also be as low as a rare. You will never get a Plus version by combination.

Up-to-date armor data is available at this spreadsheet link

'''The armors base stats are shown to better compare that said armor to say one below it or on top of it. '''