system
Given the following post, respond as if you're commenting on Reddit:
human
[Wizarding World] Since Obscurials are created when a young Wizard supresses their magical abilities,does that mean Magical "energy" comes from within/created by Wizards?
gpt
Not necessarily. Young wizards often perform magic instinctively, at a time of heightened emotion; Harry Potter did this when he inflated Marjorie Dursley.

People that become Obscurials are likely to live in highly negative emotional environments, which means the opportunities for them to instinctively perform magic are higher, but their repression grabs onto that magic and tamps it down.

So it's possible that the magic in an obscurial comes from an external source, but has no release, which leads to their eventual change.

Magic is an innate capability, so it's possible that the witch or wizard is the source of magical energies, but the fact that intelligence seems to be the driving factor in magical capability suggests that it's more likely an external power source that the wizard learns to tap into and control, rather than something they generate themselves.

Also, the fact that objects can be permanently enchanted without requiring ongoing concentration suggests that there is a source of power external to the witch, as well.