Board Thread:Speculation House/@comment-190.47.114.141-20170910035917/@comment-26397825-20170910041135

The text is black, making it impossible for anyone to read.

We were told that the flash of light against Cardin in Forever Fall was the first glimpse we get of Jaune's semblance. When the flash clears, Cardin has been knocked back and is cradling his hand like he was the one injured instead of Jaune. Because of this, the most heavily supported theory is that Jaune's semblance is a reflection type; reflecting the attack back at the enemy so they take the damage/pain instead of him.

This is different to Ren's shield because Ren's shield only stops the attack in it's place; it doesn't hurt the attacker in any way, and it doesn't knock the attacker back like Cardin was.

As for the other options you have provided...nothing in the show has suggested anything of the sorts. A calm mind is also something you get with training and experience, as it is done through learning to control your emotions such as panic and think things through quickly and effectively. Literally everyone can do this, making it useless as a semblance. Voice Buff...what is this even supposed to do? Unless you mean he is a Bard-type, making others stronger through his voice...which really does not fit his character at all.

And Hero State...meh. It doesn't really fit his personality, as he wants to prove himself strong and live up to the family history through his own strength, not use the strength of his family to do stuff.