Is there a way to prevent an artifact to be equipped when another slot (which is not the same as the slot that this artifact uses) is occupied? The request is the same as "this special artifact can only be equipped when several slots of the hero are available".
Or maybe a better example, when you have "Shield of the Yawning Dead" equipped and you wish to equip "Armor of the Damn" on top of it, but you can't - I wish to emulate this.
I understand that this can be achieved by UN:A4/UN:A5. Although since I have reached the limit of them, I have to think of another way.