You can only do this once, so if you lose, you can only get the promotional card from the Challenge Cup After you have defeated your third club, then the Challenge Cup will open
It contains over 250 new cards and puts an emphasis on Lightning-type Pokmon
Almost everyone has heard of this absurd combo: Crave Golem + Candlemas Monks = Skip your opponents turn
Upcoming cards and unexpected sales could absolutely trump the numbers on this list, but for now, there's are the most valuable One Piece cards that have been sold, ever
Its worth mentioning lifegain payoffs like Frodo, Adventurous Hobbit or Griffin Aerie that trigger if you gained 3 or more life in a given turn
Companion originally worked by letting you reveal the companion card from your sideboard at the start of the game, as long as your deck met the conditions of the companion card