What could the MC do with fea magic?
Quite a few things!
The MC's most mentioned skill is their intuition, which just means their gut feeling is more prominent and accurate than that of a normal human. There's a dash of premonition in there as well, comes with the territory lol.
They can also wield magic, in the sense that magic works for their species. It's no portals or illusions per se, but more like making reactions where there could already be some. For example; making plants grow or die, agitate the air to combust, manipulate water, freeze things, thaw things, conduct electricity, controlling winds - reactions and natural phenomena that could happen anyway, but with the help of a bit of magic. Most fae are classified as nature spirits to begin with, so I'm focusing the MCs powers that way 💜
The most special skill the fae magic brings is the ability to see the Veil. While other species can sense it, they can't exactly touch it or redirect it in any capacity, they just trust it to work as it has always done. This will be pretty important once, uh, *squints at notes* everything goes to hell.
Buuuuut... Fae (and other beings attuned to magic) are heavily discouraged from using it in public unless it's absolutely, positively necessary. In worst cases it could even result in expulsion from the city.
Hope this gives a bit of clarity!