Board Thread:Off Topic/@comment-25396609-20160520230037/@comment-27144409-20160601221958

RayStrikeAbius wrote: So it's a tattoo ya have to get reapplied every time you use it up? Maybe. It's what I'd guess. It could explain why we haven't seen them yet.

Given that a needle has to go into your skin, I'd guess that to get a tattoo your Aura has to be A: locked, B: depleted, or C: conciously lowered.