DARK Attribute monsters achieve a new level of power in Phantom Darkness. Classic Yu-Gi-Oh! monsters have been twisted into Dark Versions of themselves. The more DARK monsters you get for your Deck, the stronger they become! The evil and mysterious card behind Jaden's trecherous adventures, Yubel, can be found in Phantom Darkness. Collect all three of Yubel's cards to unlock her ultimate power - "Yubel - the Ultimate Nightmare!"<br><br>