...if you change the map file, then for network play, you'll have to share the map file with one of the players; otherwise, the maps will be different.

Is this really that bad? - In my opinion, this way we would achieve real uniqueness for each artifact, and also some kind of logical consistency (forgive my perfectionism) - I can't stand seeing multiple Markel's Skulls in a backpack - he's supposed to be a necromancer, not a hydra:confused:

Added 2 minutes later
In general, if this causes difficulties in implementation, compatibility, etc., then it probably shouldn't be done (it's up to you) - as long as it doesn't interfere with the gameplay with various bugs, lags, etc.

Added 24 minutes later
Description of the artifact "Angel's Blade"

True Angelic Blades were forged by the blacksmiths of the celestial cities, destroyed in the Age of Legends - the first era in the history of Ashan. With the loss of the angelic cities, the peoples of Ashan lost the ability to create this magnificent masterpiece of military art, and now they can only be found in ancient crypts, ruins of the oldest cities, and in places of great battles of antiquity, where the armies of light fought in the name of Elrath. If an angelic blade is tempered in holy water or in a special flame, it will acquire its true power.