It's not actually ひさつわざ, but in fact 必殺技...

Here's a lovely design that was certainly helped along by watching the third season of Slayers! Filia sure is cute.

But this er, fluffy-ish dragon...Priestess...Y'know, I got to give  Kelvinthelion credit, his very unique fluffy dragons always influenced me, personally <w>

But oh, yes, her ability is...A sort of sacred mist. (Tries hard not to think about the Rosmarinus in Bloodborne, but it really is a similar...Effect...)