Let's calm down everyone! I don't want the modders shutting this thread down due to fighting.
Back to Sorcerous Origins, is Wild Magic from a Chaotic plane such a Limbo or the Abyss or is it just a fluke of the Weave?
Honestly, 5e is flexible enough that its on the player to explain it. It could be a fluke of the weave, energy from another plane, or even just natural magic the person was born with cause weird genetics, or you could even RP it as a curse of sorts.
"Your innate magic comes from the wild forces of chaos that underlie the order of creation. You might have endured exposure to some form of raw magic, perhaps through a planar portal leading to Limbo, the Elemental Planes, or the mysterious Far Realm. Perhaps you were blessed by a powerful fey creature or marked by a demon. Or your magic could be a fluke of your birth, with no apparent cause or reason. However it came to be, this chaotic magic churns within you, waiting for any outlet."