Many items, like the Rosary or Ceremonial Robes both say Faith/Evil up (Rosary is faith, Ceremonial Robes is Evil). What does that translate to in the game?

1 Answer

They affect the appearance likelihoods of Devil and Angel Room after defeating a Boss. I'm pretty sure that Faith is the opposite of Evil/Sin.

According to the Wiki, the Evil stat increases the chance of the following appearing:
- Devil Room
- Black hearts

and decreases the chance of the following appearing:
- Angel Room
- Soul hearts

Faith also increases the chance of The Bible appearing in the shop.