CONCEAL-MATE: a concealed player stays open to their own party

CONCEAL-MATE: a concealed player stays open to their own party is an entry in the Game updates database, listed under 2026-10.

From the game's own history. A title is the update's own; a codex page is listed when it cites a file the update changed, which means its numbers or rules may have moved. Where a page says it was checked on a date, only later updates are held against it.