Your Crest. It isn't working. All that Blaiddyd strength of yours is missing.

[He takes a second to digest that. He's...well, obviously he's never fought Dimitri without it. Up until now, that would have been impossible, no matter how careful the prince was.]

It's probably for the same reason magic doesn't work here. I haven't tried using my Crest, but I assume it wouldn't work either. ...huh.