In reply to Ace-of-Rogues
The question would be what is "magic" in a world that already has more than one class of superpowers.
There seem to be ordinary people who cannot activate Aura or use dust and they make up the most of the population.
Then you can use dust, but in contrast to the supply, explicit dust usage is seldom shown. You can use it as ammunition and also consume it like a drug.
The consume part would imply the possibility of a shortage, but that is never explored. There is no one complaining about dust shortage in his organism and no one runs out of dust.
You can have only one semblance and it is powered by aura
(3) Supplementary, rare or unique superpowers
Silver Eyes, Immortality, Soul wandering after death, at least 4 people confirmed to have such abilities.
If driven by aura, there is no real reason not to qualify SE's as a second semblance instead of using a special category.
If you already have superpowers, Magic is nothing more then more versatility in one person and maybe more power to use the expanded abilities. More different spells with the option of learning even more. If you want a really complicated setup you can provide a separate fuel tank to drive magic.
If it is aura driven, it is just "more" semblances for one person with the option to acquire even more.
Fun fact, Weiss of all people who already has much more versatility than most others, is astonished that magic exists. Them Schnees are really suspicious, especially if you take a look how magic usage is shown in many other fantasy anime shows (ornamented circles).
Would like to know into which category Winter's and Qrow's running/jumping up walls is to be put. Are they on dust?