Board Thread:Naruto Discussions/@comment-26636534-20150912144222/@comment-5547501-20150912151821

I've no idea for whether or not the user can use all nature types. I don't believe it was stated that it did, rather just that it was made from them (the databook might have something about this, I don't know).

1. I would assume that's a unique case (though in episode 378, whilst in his unstable-state, Obito did appear to form an orb when fighting Hiruzen). Were Obito or Madara to somehow exit their transformed state I would assume they too would temporarily lose the orbs as it is tied into the Mode.

2. Wasn't their weakness that they couldn't negate sage energy? In which case the Juubi bombs wouldn't damage the orbs (though I believe there were statements about the Juubi being a mass of natural energy or something).

3. That depends. Does the Preta path have to make physical contact with the orbs to absorb them? I would have thought so, though there are times when it appears to make a small force field that absorbs attacks. If it is the latter, then possibly, however as they are made basically from the power of the ten-tails I would think it would either be too much to absorb or cause some other drawback. If physical contact must be established then it doesn't matter as I'm sure the orbs would disintegrate the Preta path user faster than they could absorb it.