It feels for this reason like Skullclamp shouldn't be on the list but with the abundance of creatures and the effectiveness of the draw it can be used as an engine or as just a card draw effect in more decks than are able to use many of the cards on this list
If youre curious about the stories behind cards like the Illustrator Pikachu or the Blastoise Presentation Galaxy Holo, its a great read
It enables a ton of synergies, plus the life loss makes it a great win condition in a land sacrifice deck
After April 6, 2011, players could buy cards from the Black and White series, which have a code to be digitally represented.[8] Players can also create a custom avatar.[9] There were booster pack codes which allow booster packs up to Black and White-Boundaries Crossed, to be purchased from the online shop
Match perfectly to make double-sleeving fast and easy
Elf decks almost always rely on having a strong board state and rarely have a good plan B, so they need spells like Heroic Intervention to keep that board alive