The October 2005 ban list was insane. It was total overkill from Konami. Everybody thought Goats and Chaos were dead. At first, Bazoo Return emerged as the first well developed deck, but soon after people figured out that 1x Goat, 1x Meta, 1x TER, 1x Tsuku, 1x Faith was still powerful, and Chaos Sorcerer was capable of generating real advantage. And thus, the Flip Flop deck was born. Return from the Different Dimension would remain a serious threat for several more formats, but S/T removal and Scapegoat were decent counters. Furthermore, you could use your own RFTDD in Flip Flop, although this build does not.