When is Aura of Faith used? I can't remember why this card is in the conditions pile.

jh

I've mainly used it when the priest in our group shows great faith or pray at a shrine/temple or similar occations.

I don't recall when the card was introduced or if there's a specific adventure (or somesuch) where it is used. But I do know that it is useful to make the priest(s) in the group more faithful (praying at temples, helping the poor/wounded etc.) to get the condition card.