As he said that, Robert was either knowingly or unknowingly releasing his Origin into the metal blob, his not as shiny as Vincent's, not as hard as Nicola's but squidgy in and of itself.

The blob started to contort as if fed of Robert's Prana and origin, until it melted down and wrapped around his arm before solidifying and turning into a scaled Gauntlet although made of metal, had the texture of Snake scale and Turtle shell. 
[img]http://hydra-media.cursecdn.com/skyrim.gamepedia.com/thumb/2/26/DragonscaleGauntlets.png/200px-DragonscaleGauntlets.png[/img]

"Ah Genbu the black has given you his blessing." Miraiko said with a nod.
"And now who is next?" He said looking towards Alysis and Jacob as Robert played with his new gauntlet.