Posts from How to change the bonuses of a set of artifacts.
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In RPGStats, look for a line called ArtefactSet or ArtifactSet, something like that.
But I warn you right away: you can't change everything there. You can change things like the stats that sets give, maybe some other minor things, but you can't fundamentally change the bonus from a set.
In general, the idea is interesting. After all, there are some rather useless artifacts. Can they be turned into useful ones by changing their characteristics?
Mods or artifacts? Well, probably...
Exactly, artifacts, for example, the Crown of the All-Seeing, which increases sight range by 4 units, etc.?