Board Thread:Episode Discussion/@comment-34633327-20180105193053/@comment-34246324-20180109001128

69.55.158.20 wrote: Another posibility for avoiding retcon with Jaune's power (although this is stupidly OP so I don't actually think this) is if his power isn't "healing" but "Aura Manipulation" and when it activated previously it worked the opposite way. Instead of giving aura TO Cardin he ABSORBED the aura of the punch and left Cardin's unprotected hand punching his stronger aura'd face.

Its important to note that this would be an interesting case of an ability whose main offensive use would be against other humans, since the Grimm do not have aura.

If that is the case, perhaps thats why it takes him so long to heal with it. Instinctively he can use it to absorb aura, but GIVING aura requires more effort. Just like how Ren learned to project his emotional masking over a distance with what appears to be significant effort. It could also just be to the degree of "Damage Mitigation" which would umbrella over healing and protection and fit quite well into the Cleric/Pladain flavor he has seemed destined for.

Also, still not a retcon. Remeber despite what everyone has assumed, Jaune is the only one ever shown to be able to heal via aura and it's never mentioned anywhere as being possible. Not when Pyrra is teaching him about it, not in the World of Remnant devoted to aura, nowhere. There have been a number of important, plot central wounds on the show now, and they always seek medical help, nobody ever even suggest that arua healing is an option.

Jaune's face heals after his aura unlocks, and Weiss heals while covered in Jaune's aura. That's the only healing in 5 volumes of RWBY.