Pocket Monsters Card Game Vending Machine Series (1998) This unusual series of seven cards were only available from vending machines in, yes, Japan
Although the Rokket archetype this deck centred itself around was never competitive enough to reach mainstream adoption in any serious capacity, many of the cards within the structure deck were useful as a smaller engine that could be integrated into other decks and ideas for powerful results
This makes it one of the best cards to pull in the set due to how it can still be used in the modern game
Once per turn, during your Main Phase: You can Fusion Summon 1 Spellcaster Fusion Monster from your Extra Deck, using monsters from your hand, field, and/or "Prince of Fairies" your opponent controls as material
Above: The avatar creator, apparently collectively designed by every Facebook game developer ever Trainer Challenge is "coming soon," and will be playable at www.pokemontcg.com