My Yubels are my favorite cards, but I only own 1 copy of each. However, all I've needed thus far is Mystic Tomatoes, my Witch of the Black Forest, and a few Sangens (No, my Yubel deck is not meant for Tournaments due to that very card. Sangen's on the ban list.), and I am able to keep Yubel on the field, along with plenty of tributes. As well as that, all I need is my Rings of Magnetism and my single Heart of Clear Water card. Equip them to Ultimate Nightmare, and he becomes virtually unstoppable, if not for 2 special traps I own: Dequip and Eternal Rest. However, thus far, none of my friends I've dueled has either....but my friend James Smith has an original copy of the American-made Obelisk and he has both Uria and Haman.
The bane of my dear Queen's deck.