Board Thread:Off Topic/@comment-24993958-20151027072937/@comment-25396609-20151117082256

Glynda has a lifetime of experience and specialization mastering her semblance, of course it's overpowered she powerleveled it into the Nth dimension several times over.

It was explicitly stated that what Cinder did was dust related, not her semblance. Generating fire shields ot block bullets? dust dress. Fireballs? dust dress. obsiian swords? either dust or her semblance, most likely a combination of semblance + fire dust or whatever blend of elements makes Lava dust.