Originally posted by Phanteros
no proof for seph's regeneration he need the clone.
Huh? The "clones" were simply parts of Jenova, in which Sephiroth after FF7 became the core entity.
Right from the UOG:
"Due to its amazing regeneration capabilities, Jenova's divided cells reunite to become one again."\
Statement from the Reunion Files:
"One of the properties Jenova possesses is that separated pieces of flesh, called cells, will regenerate back to their original form"
Now lets look at this logically, throughout FF7 game (while Sephiroth is ALIVE), Sephiroth used pieces of Jenova, each piece would fully transform into Sephiroth, Sephiroth being the new Jenova. Does the mass of the arm, or the mass of the leg equal up to Sephiroth? No. So how does he transform? Easily, he uses part of Jenovas ability stated from above, REGENERATION. He regenerates his original arms, legs, ever appearance, even his sword, from a piece of Jenova leg or arm.
Now in AC, Sephiroth is dead, he cannot do anything with the Jenova cells, which is his power. What he can do is guide his spirit body (stated by the UOG that the trio were Spirit bodies) to take in Jenova's cells, in that box. That would revive Sephiroth. So once Kadaj took in the cells, what happens? The same thing he has been doing in FF7, he fully regenerates his arm, legs, his entire being, even his sword. It wouldn't have made a difference if Kadaj was a midget, a 50 lb kid, or a dog the size of an arm, or anything, as long as the Jenova cells were there, he would regenerate his full form.