All these booster packs @_@ Wolf Underling pls 
I keep crashing when opening them though. Pretty much every time I click on the item in the NX tab to open it after a second my game closes. I relogged a couple of times immediately after to find the item had been opened (as in, I had 3 familiars in my use tab), but I still had the booster pack in my NX tab too. Accidental familiar duping? lawl
Oh also if you're unable to accept one of the Hot Time boxes (if you're doing it on mules or something) it'll probably be the one with the Halloweenster medal, if you drop that and accept the box you'll be able to open it, since that medal is one-of-a-kind.
I keep crashing when opening them though. Pretty much every time I click on the item in the NX tab to open it after a second my game closes. I relogged a couple of times immediately after to find the item had been opened (as in, I had 3 familiars in my use tab), but I still had the booster pack in my NX tab too. Accidental familiar duping? lawl
Oh also if you're unable to accept one of the Hot Time boxes (if you're doing it on mules or something) it'll probably be the one with the Halloweenster medal, if you drop that and accept the box you'll be able to open it, since that medal is one-of-a-kind.