GM: Stephen, you're up.
SH: I c a s t m a g i c m i s s i l e .
GM: And?
SH: O h s o r r y . I d i d n ' t c a l c u l a t e t h e f l u x c a p a c i t a t i o n y e t .
GM: No problem. Everyone, Stephen's wizard starts casting a spell. Stephen, let me know when you're ready. Gronk, you're...