How much magic is hidden in plain sight? It's known that the academies suppress knowledge of magic, and it's not unthinkable that some magic is passed off as 'semblances' or 'dust tricks.' Both Cinder and Glynda have used runic-based abilities (see episode 1), with at least Cinder's being probably explicitly magic; Weiss's semblance seems to violate the Rules of Semblances, being both hereditary and multi-functional. Factor in some other details, and the question gets really blurry.
I’ve been sitting on this ask for a while, sorry. This is in part because there’s several good questions to be derived from it, but also some speculation that I’m fairly certain can be chalked up to Early Installment Weirdness.
“There’s no such thing as magic… right?” This line from Weiss is almost laughable to us viewers when Dust, Aura, Semblances, Grimm, etc are all essentially magical compared to our reality - but in Remnant, those are the norm. Human transformation, reincarnation, infinite multi-elemental control… those seem to be what crosses the line, simply because such powers (at least to the extent that the Branwens, Ozpin, and the Maidens have shown)are unheard of.
I don’t know that it’s entirely accurate to say that the academies suppress knowledge of magic - that is to say, the institutions themselves don’t (or wouldn’t), but the people running them certainly keep the secret. Only the headmasters and a few select informants even have a clue about extra-magical abilities and the related factual lore of Remnant. Maybe this is just semantics, but it’s important to keep in mind that the institutions as a whole aren’t going around silencing people on the topic of magic or something else in that vein of “suppression” - people just don’t know.
Is there “magic” that has already been shown but passed off as a “side-effect” of a Semblance, or a “Dust trick?”
It’s quite possible - Yang’s semblance may fall into this category. Cinder’s fights are littered with actions and abilities stemming from various (at times ambiguous) sources, that I intend to post more questions about. As for Cinder and Glynda’s rooftop fight, remember that the Maidens weren’t a thing at all until production of Volume 3 - so the “runic” fire blast is likely just some proto-Maiden-or-Semblance-related ability of hers that later became more defined with the concept of the Maidens, and so is definitely magic, which makes sense since she already had half the Maiden powers at that point.
I’m not sure what about Glynda’s fighting comes across as more “magical,” since between masterful telekinesis (her Semblance), Dust and Aura manipulation, it seems to make as much sense as any standard fight in RWBY - especially for one so early on.
And the Schnee “Grab-Bag” Glyphs do seem quite immense in scope, but given the training and energy that seems to be required to use those abilities as well as Winter and Weiss do, I’m hesitant to chalk it up to anything extra-magical, barring some as-of-yet-undetermined inherited Maiden/Wizard magic from a Maiden/Wizard-magic-influenced parent (which might then parallel Yang and Raven). But that’s some hardcore speculating.
The main questions I’d like to come back to from this post:
What is Cinder’s Semblance? What distinguishes it from her Maiden powers and Dust usage?
What is the Grimm bug that Cinder uses on Amber? What happened to it? Are all Grimm able to absorb/steal magical (Maiden) powers?