Current questions and answers regarding the map editor.

Is it possible to create a custom artifact with a specific set of parameters? (e.g., +10 to attack) Or modify a standard artifact to make it the way I want, but in a way that these changes don't appear in other maps? If so, how?

There are artifacts that are rarely found: Frida and the Ring of Cursed Shadows. You can check out the map "Journey" on this forum as an example; these artifacts have been modified within the map files. Since they are very rare, and some people don't even know about them, this is a good choice!