NAF – New artifacts with unique properties.

Yes, such options are possible ;)
But in that case, it turns out that the hero needs to find two Angelic Blades?
Simply having the option to "find all 3 components and get 2 artifacts at once" is already a bit of a workaround and deviates from the overall mechanics.

Yes, two blades are needed)
The point is that both the Blade of Vengeance and the Blade of Revelation are Angelic Blades. In Heroes 6, these blades were wielded by the Seraphs – one blade allows you to resurrect allies, and the other allows you to deal more damage to units that have already killed allied troops. In Heroes 5, this ability was divided between the regular and upgraded units, while the basic unit does not have the ability to either resurrect or take revenge. That is, we have a basic Angelic Blade that has not yet decided which path of development it will take – either as the Archangel's Blade or as the Seraph's Blade. By influencing it with one or another component, we transform it either into the Blade of Revelation or the Blade of Vengeance, giving it a complete, final form.