The magical elements exist here--or in other worlds--if what I have been told is to be believed.

As to that, fresh enough to be a still-open wound appears to be the most common. Anything that has been scarred and has left lingering problems would not be able to be fixed.

By this particular form of magic.

[....god this is so irritating, he's starting to irritate himself by his own attempted explanations--]

Attempting to discuss this without an understanding of how many systems of magic could even exist here is admittedly a little troublesome.