Just leave the free bonus in the castle and that's it... It's not that hard... :)
The trick is that they will have 3 levels of attachment...;) - won't this be considered a violation?
Added after 4 minutes
[/U]And one more question regarding a situation that might arise:
if we are in the final turn of the game, after which the victory occurs,
we kill the enemy hero with an artifact that gives a bonus to primary skills,
and this artifact is equipped on our hero (not in the backpack),
will this artifact be taken into account in the hero's parameters in the results table?
Added after 2 minutes
A similar question, in the case when the hero levels up...
Well, I think it's simple: of course, it will be taken into account; but what if, after the last battle, you take artifacts from the computer, BUT THEY ARE NOT EQUIPPED, because the slot for that artifact is already occupied, but otherwise, there would be a bonus to primary skills, what then?