User blog comment:Caudyr/Abilities List From the Author + Translation of Abilities as I go Through the Story.../@comment-27061613-20151113075605/@comment-124.83.16.225-20151113081343

I read up on what you put at the description for that ability, Caudyr.

"it's possible for the user to restore themselves by extinguishing said existence."

This is wrong. It's more like, even if one of the existences disappears, it's possible to reconstruct it as long as the other copy survives. It's how he fought against the Dragon Empress; he left one copy hidden in the volcano as he was falling down while the other copy continued fighting the Dragon Empress. So each time that copy was killed, it was resurrected since the hidden copy was safe and sound.

It's a separate ability from the Duplicate Existence ability, Phantasmic, as that ability allows Rou to create a duplicate body for himself (not a simple clone or puppet, but an extension of himself as much as an extra limb would be). When he does that, though, his mana ends up being divided between the bodies.