Now that we have artifacts to raise hero skills from level 4 to level 6, I think it's time to add a new kind of artifact:

Artifact of Attack +1
Artifact of Defence +1

These artifacts, when used, would raise the hero's Attack, or Defence, by 1 permanently, with no limits.

Back in the days, we used to get attack and defence +1 when exploring Adventure Huts, these artifacts would bring back this feature, but in a different way.