Board Thread:Off Topic/@comment-24993958-20160607185611/@comment-28288412-20160613222420

That's why you specified lost to the damage for intial activation. The additional aura spent is not by damage but to activate semblance. Just makes it seem OP kinda from its description IMO. Aura lost is directly converted into an offensive attack automatically with no additional aura spending.

Basically says no aura ever goes to waste.