User blog comment:Varzan Deodinm Beldinm/Most Powerful Semblance?/@comment-24620600-20150109103636/@comment-23790511-20150109190845

Maybe something like a flashbang grenade that has those qualities. That's probably more close to what we'd see. But if annihilation of matter and nullification are possible superpowers, they can easily fit as Semblance here too.