Sorry for the confusion. There is no 30 day wishlist, and you don't even need a wishlist anymore! However we STRONGLY encourage having one, because without one, you can't be considered for random giveaways! But with regards to drops, you don't need to have one/have the magic/companion you want listed for 30 days.
@Parelia
You can only challenge for entrance into a herd. In order to challenge for a herd rank you must first be part of that herd :) And remember, because of how herds work, anyone qualified can take your opponent's place in a challenge. So imagine you decided to challenge Shida for an item, because you think she's weak, Gaucho could take her place as a member of the herd (just as an FYI if you're trying to be strategic about something ;) )