Why don't they just put crazy op card on card trader like.. Mirror Wall. That one hella worth my UR jewel instead of these donky wongky boo bullcrap URs.
I wish cards like Gravekeeper's Vassal and Union Attack are added into the Card Trader.
That way everyone can easily farm the Level 40 Legendary Duelists. Right now we only have 1 Vassal, and getting the Union Attack requires dueling little Yugi tons of times which is both tiring and getting boring......