If there were fewer, I could maybe maintain a deck for each, but as someone who might play cEDH, Old School, Premodern, Legacy, Modern, Pioneer, Standard, Pauper, and even Vintage, its just too much to keep a tournament ready deck for anything I might want to play
Plus, participating in two Prerelease events can net you a promotional pin (while supplies last)
If Squall gives himself Double Strike and manages to connect with an opponent, he can bring two things back from the dead
Sephiroth's transformation is triggered by four deaths in a turn, a reference to his tendency to wipe out your party of four heroes
It EXILES any permanent with cmc4 or greater for only two mana
Using the right sales channels, negotiating with buyers, and pricing your cards appropriately ensures you're getting the most money for your cards