Freewriting
The first to grasp at its' edges were the witches. Neopagans and wiccan types whose knowledge stemmed from older times. Beings who knew at least knew that a tweak of perception was necessary.
Those that grasped at magic hid well behind the veil that perception drew over them, and it was so effective that they could talk in public without ever being known to have actual, real magic.
Freewriting
(( This is, what i am at least imagining to be the basis of my ongoing story project. I've struggled with Magic Systems for a long time, but I've decided to draw a lot more from my life than I originally intended, and keeping it "more close to truth than you'd think" ))