In 2009, Flygon Lv.X was one of the strongest cards around, but in the 2010 season, Garchomp C (C) is able to quickly counter Flygon with its Colorless Weakness
But this card isn't a great choice if you want a commander that's more than just a one-time bomb
You want to cast Vnwxt as quickly as possible so you can start building up speed
Most black decks that dont want to win through combat or combos are going to be winning with life drain, whether thats through intricate graveyard shenanigans, aristocrats, or just pumping a bunch of mana into a spell
Always confirm through PSAs database
In particular, cards which are first edition are particularly valuable, as they were the initial versions printed