Originally posted by Ridley_PrimeIf immortality were granted with the Earth or Namekian Dragon Balls, all the heroes would have to do is assemble one of those sets again, and wish to counter Black's immortality(with Goku's IT, he could likely collect them all in less than a day.)
Besides that, isn't immortality something regular Shenron could've granted? So why do the super dragon balls gotta be used for it?
That said, I highly doubt that lesser Dragons can undo a wish granted by the Super Dragon Balls... Which makes Black's immortality much more of a permanency, as the SDBs are infinitely harder to collect.
...That's what I would guess, at least. /shrug