In battle, you can't consume artifacts (again, it's a battle event).
There are two versions of the mod. In the second, NHF_E, I will implement some of the suggested heroes (the latest Dreylan). For such heroes, you can easily choose a name and even an overpowered (but not too much) special ability.
No, I'm asking if I can suggest a decent special ability, and you decide to create a hero with it, can I then give him a name and backstory?