Move Creation Workshop

[Amaterasu]

Hm... Having it weaken attacks instead of diverting them is a much better idea, thanks for that.
And yeah, I was worried that this would require telepathy. I was hoping to avoid it because telepathy is incredibly impossible for Somerled, so impossible that he actually can't even read half of his own mind. It could probably be foddered off so that it's only used for terror-based moves, but it'd still feel odd having that in his roster...
As for speed, I'm tempted to say instant, occurring as soon as you lay eyes upon him, though that'd probably require homing. Would about the speed of a bullet be reasonable?

Well... technically it's possible for any Prime to have any Power or Proficiency even if canonically they would not, because Omniverse physics. I know this sounds cheesy but try to think of it as an opportunity, maybe? Somerled could gain Telepathy completely against his own conscious wishes, maybe through an object (a magic trinket of some description) that gives him that power even though he has a hard time using it?

I realize that it's annoying to purchase a Power (and Telepathy isn't cheap) just for one move, But I see no way around it if you want to keep the fear aspect of your Super. You could obviously just make it a blast that weakens the power of whatever is thrown at him, but that would change the nature of the move completely.

And yes, bullet speed sounds good to me.