[@Yuuta]

Mostly swords with the ability to burn or freeze, or armor that can resist certain elements or other effects when worn. Nothing too crazy, I promise. (The best example I could give is similar to how Skyrim or maybe Dark Souls handles giving weapons magic effects, but I don't think neither are exactly what I'd be going for.)

Such things would require specific set of items and materials to be able to use (such as specific ores, maybe even other items not typically used in forging) As well as a specific know how to use them in forging to be able to craft it with any sort of ability. It definitely wouldn't be something that can just be abused or spammed, since most weapons I imagine could only have on effect added to them, and then its on them for life or until they break or something.

The downsides would be that its not a quick process to be able to do something like that, as well as the maker would need specific items - might even make the sword more brittle as well or have limited uses before the weapon exhausts itself. Additionally, if a person uses a weapon that has some sort of fire ability - good luck trying to use that on a fire spitting dragon. It could give people certain edges in some situations, or turn a trivial task into a somewhat more difficult one if their weapon isn't suited to something.

Just thought I might throw the idea out there. If its not possible to start with it - I could completely understand perhaps them learning it later. If its not doable at all, then I can just scrap the idea and forget it. That's cool.