In oathbringer it is specifically mentioned that azure's blade doesnt burn out eyes like a shardblade and instead turns the dead gray and colorless.
i cant find any WoB on this but i feel like its a hint to how hers is obviously a bit more fine tuned than nightblood and instead of just consuming every bit of investiture it can it is designed specifically to take breaths... also, given the extra care in its creation, if she is actually sucking something into the blade when she kills is she basically charging up a investiture charged megabuster?
only issue is that im pretty sure ive read somewhere that a drab is essentially a normal non-nalthian and breath is specific to that system... so is it just a cast off description of someone dying? a continuity error and scrapped plan?
