Something I didn't see mentioned which I'm curious about: After you challenge someone, they set the rules for the battle, sure. But if you don't like those rules your foe set, can you withdraw your challenge or are you forced to go with it?
Considering that Ghost/Dark example above, when is the challenger allowed to set some rules of his own, like saying No Dark-types in response to No Ghost-types like in the example above? Only when the foe forbids usage of a certain type during the match or ...?
If someone without PO challenges someone, can they ask for the match to be held on Showdown or something? I don't think the platform would matter that much after all. And no, I can't get PO
How do we actually challenge someone? Via PM or something?
So we just pick an alliance and that's all there is to joining? We don't have to ask for anyone's permission or anything?