Problem: Chaotic good bard wants to use an armor made literally of beggar's skin and blood of a lawful good dragon. Item description says "only the most evil of humans could wear such a vile item" but in the Baldur's Gate video game (which is loosely based on 2nd edition AD&D and some 3.5 additions) there's a High Level Ability (HLA) for Bards and Thieves called "Use Any Item" (UAI). It allows use of items regardless of class, alignment or racial restrictions, etc. Mechanically the bard can wear it, though it's unclear to me if that's an oversight or if the ability is supposed to work like that.
Ingame description of the ability makes no mention of alignment one way or another
"Rogues take pride in their ability to adapt and make clever use of
whatever is at hand. This ability is an extension of that basic skill.
Once learned, the effect is permanent. The ability allows the rogue to
use any item, even items that are typically restricted to one class.
This allows the rogue to use everything from wands and scrolls to
mighty weapons that none but a fighter could otherwise use."
I assume the game designers came up with it themselves, but as they're unlikely to be available for questioning I figure if I can find something equivalent in any pen-and-paper game system that is better described that would help me make a decision here.
Over here Kaigen speculated that
"It might be extrapolated from the "Use Magic Device" skill from 3.X,
which thieves and bards were the main classes with access to. UMD
allowed you, with a high enough skill check, to do things like
activate items without the proper command word and to fake various
prerequisites, such as race, class, alignment, etc. By epic levels, it
was easy to have a skill modifier high enough to reliably use just
about any item you fancied."
But no one in the thread seemed to know for sure. Even if that is the origin it doesn't really help as the alignment restriction on the object wasn't the object rejecting the user unless of a particular alignment (where it could perhapps be tricked by UMD skills into thinking you had a different alignment) – but instead from a presumption that anyone else couldn't "handle" the evilness of it all.
Because of the way it worked in-game I always interpreted that ability as basically a rogue learning to cope with the weird magical energies regarding the nature of the artifact and using it for his own purposes what ever those may be. An evil bard can wield a paladin sword while hunting angels, and a good bard using an evil artifact that would corrupt normal people can go hunt evil creatures.
What is the D&D ability that Baldur's Gate's "Use Any Item" feature is based on, and how would that feature interact with an item like this armor?
Best Answer
The item description you bring is unclear. Is "only the most evil of humans could wear such a vile item" a part of the item's mechanical aspects? Or just a description of the item?
If the former, D&D's Use Magical Device skill can bypass it, since it explicitly allows a character to activate an item's power regardless of alignment:
Other systems that don't have alignments as part of their mechanics will probably not have any such feature.
However, if this is only a part of the item's description, then I would say that any character can wear it - it's not a question of activation - but it's a morally reprehensible thing to do. So your Chaotic Good Bard, if he uses it, is perhaps not as Good as he thinks he is. Is he wearing it because he feels the end justifies the means? Wearing it can further Good, by doing evil? This could lead to a great story around character development and fall from grace. But don't mix game mechanics questions (which should be stated explicitly in the item description) with moral choices.
Without knowing the specific details of the item in question, in the context of the system it's in, it's hard to give an answer.