One Faction policy

Diplomatic action

A ruler declares you can only be a member of a single faction guild or sect.

Due to increasing numbers of fair-weather namers amongst the factions, they agree to enforce a strict requirement amongst their ranks of single-faction membership only, with members of one faction not allowed membership in any other Sigilian faction, guild, or sect. Due to the by-now tremendous influence of the factions in Sigil, this has the side effect of depressing the memberships of many of Sigil's guilds to the point of near-nonexistence.