Anyone can join, with a 50-word vignette in the comments. Your vignette does not have to include the prompt term.
Go as a group. Not alone. No matter how much you dislike your companions' chatter, no matter how inane that chatter is, you must never go alone.
No matter how brightly the mist shines. That, in fact, is the most dangerous sign of all, when the mists glows like glory.