Oh, that explains it all. Thank you!
I usually play on Normal, so I haven't put that much effort on unlocking/buying the skills, heh. But yes, getting an Unreal spellcard with, say, Blindness 3 + Immortal Enemies would be awful.
Those details about the stage title and music are neat indeed; seeing a Reimu/Marisa team is cool, too. It was a pretty neat video, in my opinion.