Testing with a dummy account, it appears that the /fx command can be used by anyone, including Base accounts and including players (not the GM). While I'm perfectly happy with that, the release notes for Rugged Reroll claimed that the FX were a feature intended for Mentor GMs, which means that this is likely unintended. It is worth noting that the /fx command only works on selected tokens (not targeted tokens and not on arbitrary mouse clicks), so it's limited in scope for non-Mentors and non-GMs On that note, the /fx command also appears to be pretty much entirely undocumented. Is there a full writeup on it in existence already that I'm just not finding?