Forbidden Artifacts
You can't use combined artifacts, which means you can't have one artifact mixed from several that gives additional bonuses from wearing a complete set. If you find a combined artifact, you can use one relic (4th-level artifact) from it or all artifacts from lower levels (1-3: treasure, minor, major). You can't use Angel's Wing, Boots of Levitation, and the Armageddon spell while wearing Armageddon's Blade. Players are not allowed to use relic artifacts (applies only to templates that do not normally generate relics and utopias, especially Balance, Balance PC, Panic). All mentioned artifacts can be traded for treasure/money/experience.
Literal translation
Forbidden Artifacts
You cannot use combined artifacts, which means you cannot have one artifact mixed from several, which gives additional bonuses when wearing a set. If you find a combined artifact, you can use one relic (4th-level artifact) from it or all artifacts from lower levels (1-3, treasures, minor, major). You cannot use Angel's Wing, Boots of Levitation, and the Armageddon spell if you are wearing Armageddon's Blade. Players are not allowed to use relic artifacts (applies only to templates that do not normally generate relics and utopias, especially Balance, Balance PC, Panic). All mentioned artifacts can be exchanged for treasure/money/experience.
Human translation )))
...
the most interesting part:
If you find a combined artifact, you can use one relic from it or all artifacts from lower levels.
and also: it is unclear - does this rule apply only to battles between opponents or also to battles with creatures on the map.
