Cards with this powerful of an effect are simply not printed at this mana value any longer, and if they are, like Goryo's Vengeance, they have a built-in limitation
Granted you probably cant pull that trick in a real match, but Harpie decks have come a long way since then
Since decks can only have two of the same card in the roster, youre likely to eventually earn way more than just that
There are some seriously powerful monsters lurking in the current metagame (just hearing the words Red-Eyes Dark Dragoon sends shivers down my spine)
The comic ran for 8 years and became a worldwide sensation, inspiring a trading card game that's sold billions of cards, a popular anime series that ran in the U.S
Looking at the original design, it is a design that is reminiscent of Gurren Lagann