Board Thread:General Discussion/@comment-27044329-20170308170656/@comment-27044329-20170308175131

I disagree. Is is for singular and are is for plural, but a single group is still referred to in the singular in English.

Alternatively, The Mafia Deception roles are makes sense.

In fact, The Mafia Deception are can make sense. However, this is because the nounal phrase Mafia Deception is here being considered with an irregular pluralised form.

Thus:

Noun sing. Mafia Deception (i.e. a member of the Mafia Deception group)

Noun plur. Mafia Deception (i.e. multiple members of the Mafia Deception group)

Thus Zed is referring to the Mafia Deception as being the Deception roles WITHIN A GIVEN GAME, making the Mafia Deception being a collection of seperate players (or roles if you like) within a game.

That said, I still prefer is, because there are not always Mafia Deception in any given game.