https://imageshack.com/i/ip6nsjRcj

https://imageshack.com/i/kqTviolqj

Or seemingly normal citizens of Ravnica. It would appear they've never been treated as relevant outside of Transguild Courier and this scene here. I wondered if there was more to know about minor background characters running neutral errands and messages between the guilds without actually being members. Though here, they do appear to get some guild specific access, as this courier in question became a target due to her possession of an invitation to seemingly private ceremonial event the Selesnya Conclave was having.