Starmie, Gyarados, Blastoise, Articuno, and Palkia have all had genuinely viable EX versions, while Greninja is useful across several decks, and Vaporeon, Manaphy, and of course Misty have each been added to provide very strong, Water-specific support in different forms
Neo Genesis (2000): Introduces Johto Pokmon with baby Pokmon and powerful holos like Lugia
Well, it's because you can easily slot a few Mutavaults into your list - an MTG land that can become all creature types - to supercharge the card
This isn't to say that Nadu also didn't deserve a ban due to it's power level, as it was a top deck played at the highest level of competitive Commander (aka CEDH)
Theres also a newer product called Play Boosters, which aim to combine the draftability of Draft Boosters with the fun random pulls of Set Boosters
For example, Bite of the Black Rose forces your opponents to discard two cards in the event of a tie