Clocktower.fyi

If the Demon has the Atheist ability, the Storyteller may break the rules. Pros

The Storyteller is not a player and thus cannot be shown to the Steward, even if the Atheist is on the script. If the Atheist is in play, however, the Storyteller can be shown, because the Storyteller may break game rules.

The Storyteller is not a player and thus cannot be shown to the Knight, even if the Atheist is on the script. If the Atheist is in play, however, the Storyteller can be shown, because the Storyteller may break game rules.

The Storyteller can simulate a Vizier in an Atheist game, but the Vizier player hasn't got much incentive to play along as this confirms to them that it's an Atheist game, so it's best to choose the Atheist themselves for this purpose. This is because being announced as Vizier makes it less likely for them to be believed as Atheist right away, so many players will wait a day or two to try and point out other abnormalities from the Atheist ability.

A Politician who successfully makes the entire good team believe that the Atheist is evil and manages to get them to execute down to final 2 can be the only player that wins in an Atheist game.