User blog comment:ChishioKunrin/"Why was Neo afraid of Raven?" An explanation./@comment-9464517-20150814121132/@comment-24891101-20150815184626

Semblances can do about one thing, and entering dreams is too exotic of an ability. Therefore it can't be attributable to that, so it has to be something else, which means a separate type of superpower that we've gotten no indication of.

Besides, it's too much too quickly. You don't have a mysterious savior character do their thing, then the next episode have them show up and explain stuff, even through a dream.