[Unfortunately, it was absolutely this man. And Stephen is at least the sort to own up to it, or at least not bother to hide that fact.]

Yeah, uh. Sorry about that.

[He offers it fully this time, a slightly rueful apology. Now that this fumes have gone whirling out the door to disperse elsewhere, he dismisses his spell. The amber lights fizz out.]

I'll make sure to properly warn everyone before I try that again. These crystals are more volatile than I expected they'd be.