[quote=@fdeviant]
Could I be in a collaborative post with someone else in the arc? That way he can show up and all the interactions and what not will be genuine and no guesswork has to happen?
[/quote]

You might want to wait until there's a good moment to interject, unless you want him to burst in while Odette and Lekh are trying to re-subdue Racheli. 

Depends what sort of role you want the guy to play though, I suppose. You only really need to collab with one of us if he's interfering directly, because of the magic used or what have you. If he's just watching there's no real need.