Ready to play out of the box
In the late nineties, the Pokmon animated series was popular all over the world, and people saved collections with "pocket monsters" and changed Pikachu for Bulbasaur
Yuma, Tetsuo, and hardcore duelist fans who had watched the original had a Nerdgasm when the 'statue duel' brought the original ace cards (Blue-Eyes, Red-Eyes, Dark Magician and Dark Magician Girl) to life
Gatewatch Beacon FromTheShire: In a superfriends deck this is useful enough to justify running a 3 mana rock
Lillie, for example, became the most expensive Pokemon waifu card after it sold for over $100,000 at auction a few years ago
Misty (Pikachu Pack) Mistys blue energy generator is an essential pair with Articuno and Starmie or any water deck in general