Talk:Harley Quinn/Arkham Knight/@comment-115.132.103.34-20161012164942/@comment-28738889-20161012170023

A long, long time to go into the challenge booster. We're at update 2.11 and you can only get challenge characters from pre-2.3 update. As for repeats, many characters never repeat at all, so it's good not to rest your hopes on that. They do occasionally so gauntlet events, but those are quite rare.