I didn't like them at first either, but the Nuns have a lot of potential.
...I know. I've literally told other people about the draw engine. However, in a deck that doesn't run curses and is looking for better alternatives to the generic succubus, the Nun is functionally identical. In comparison, Cheer Girl has the subpar boost ability and, much more importantly, the same Big Breast modifier Bunny Girl has, making her more useful to decks that run Big Breasts or Miracle of the Milk God.
As an alternative for the Generic Succubus, AFTER you've added whatever Squeezers improve your game plan and have space left for more bodies to avoid bricking, the order is as follows: Bunny Girl (attack boosting + improved mana gen with Big Breast), Dryad (periodic improved mana gen + token generation with Big Breast), Cheer Girl (Less useful attack boost + Improved Mana gen with Big Breast), School Girl (Multi-attack buffing with Big Breast), and finally Nun (has a picture).
Obviously the Demons aren't in this list because under no circumstances should they be considered replacements for generic succubi due to their trade-offs making them... sidegrades at best. I'm not saying the Nun is bad, I'm saying outside of decks where she is a playmaker, she's functionally identical to the stock Succubus and thus not worth taking over Cheer Girl, because I have yet to make a deck that doesn't run triple Big Breasts and the attack boost, while inferior to Bunny Girl's, exists.
