Board Thread:General Discussion/@comment-2114819-20130919204921/@comment-24144063-20140106033049

The mask seems to simply be a stylized variation of the standard White Fang mask, so I kind of doubt it has any magical properties. My guess is that moonslice is just his semblance. It seems to function by allowing him to absorb energy (in the trailer's case the spider droid's laser) and then release it all at once in a proportionatly powerfull attack. If this is how it works (and I could easily be wrong, this is just speculation), then it would only be OP on the rare occasion that he gets hit by something really powerfull, like the spider droid blast, otherwise it's usefullness would be limited.