Tournament history, gameplay legacy, and low availability all contributed to its long-term value
Even if Sephiroth, Lightning, and Kefka do get reprinted, itll likely be as default frames or, at most, as borderless cards
The Power Nine Nope
Being able to mix the two together could become a formidable threat thanks to cards like Vicious Batterager
However, after he duels Yugi when Ziegfried is disqualified upon losing to Kaiba, his identity is discovered by one of Kaiba's workers after Ziegfried has him play an illegal card called "Golden Castle of Stromberg", which releases a computer virus into Kaiba Corporation
I remember recently when Vesuvan Doppelganger spiked and I started experiencing some regret for now picking up more copies when I had the chance. Then I noticed there were still plenty of copies for sale, especially if I was willing to accept heavily played condition