So, I think I got Blaire's, Skyra's twin sister's, semblance. Primal fear. More or less. 
Basically an illusion with mental changes to her targets, which makes her look incredibly scary, with black aura and glowing red eyes, all of which affects her targets' (reptile) brains to pretty much slow their reaction times, make their bodies react to a laming fear that, in theory, doesn't exist, and, for weaker minds, even freeze them entirely, like when you dream of seeing a ghost or something and you can't move or speak properly, other than senseless babbling.
Too powerful?
Not creative enough?
Thoughts?