Naah, this is magic missile, every magic user in our world knows that one! I don't think I have one that nobody else can use - unless you count the lich stuff that makes the ghosts hesitate?

However, all fire shit is my jam, dude! It's second nature!

[She laughs and then lazily casts a fourth-level spell to make a huge fire wall between them and the ghost-monsters.

...sorry for the collateral damage, tests of courage staff.]