[Yuya nods emphatically.] We tested it! It definitely works the same as before.

[Speaking of that--Yuya misses Strange's look as he sets the duel disk in his lap and skims over his notes.] It blocks them from an area. I guess because they can't get into a place they know they're not allowed in? If you feel strongly then the spell gets stronger, too, so it works better if you get more people casting it.

[Greater power of will and all that.] I guess being really good at magic could make it stronger, too.