User blog comment:Mnzombie/Your Sacred Gear/@comment-1359322-20140921134244

Oh well bored so i might as well do something.

Name: Black Mist
 * Abilities: Releases a black mist that transform anything it touches into demonic weapons. The weapon will restore to original state after user stop touching it.

Balance Breaker: Black Puppeteer
 * Abilities: Same as original but more powerful, can even control living beings.

P.s. In case your wondering, yes this is the ability of Berserker from Fate/zero.