Fire emblem shadows Black Knight demo

I guess we're entering a new era of magic, as his unique magic differs from light and shadow. Also, why does he sound like he's in pain when using a strike magic, especially when using magic in the shadow phase...(I know voicing the Black Knight must sound like he's a true menace, not meant to speak too much in combat, but I still wonder how that works in the Path of Radiance and Radiant Dawn remakes, based on the style of the Switch + Switch 2 FE games; Path of Radiance and Radiant Dawn seemed most fitting to have remakes)