Potion. So you never die.
But then again. Super Potion - then you would like, never die, like, forever.
In all seriousness...Krucifier's top ten cards of all time, counting down from 10 to 1;
10) Magcargo - EX: Deoxys - 'Smooth Over'. This was a great card that allowed you to control what you drew. And...Well...It combo'd with anything that drew, be it Pokemon (Like Swampert d (Crystal Guardians) or trainers like TV Reporter.)
9) Dunsparnce - EX: SandStorm. This brilliant card allowed you to build up a bench quickly. Not much else it was good for though.
8) Jirachi - EX: Hidden Legends. A great card but not deserving of a higher place. It allowed you to evolve any of your Pokemon but you had to place a damage counter on Jirachi.
7) Energy Removal/Super Energy Removal - Base Set. Energy Removal allowed you to remove one of your opponents energy cards, whilst Super Energy Removal let you remove 2, but you had to discard one of your own. Both were pretty neat.
6) Prof. Oak - Base Set. This card made you discard your hand to draw 7 cards. Pretty nifty. Not much else about it though...Ehehe...
5) Pidgeot - EX: Firered Leafgreen. This miraculous card allowed you to search your deck for any card you wanted. Pretty neat, huh?
4) Krucifier. HEY! I deserved a spot in the top 10. ^_^.
3) Gardevoir Ex - EX: SandStorm. This card...Was and still to this day, is AMAZING. There are no other words for it. For 2 energy - you could place damage counters equal to the amount of cards in your opponents hand on your opponents active Pokemon. It's second attack...For 4 Energy, You did 10 damage for each energy on the entire field...
2) Mew Ex -EX: Legend Maker. This awesome card has the amazing PokeBody of being able to copy any move in play. Sounds pretty 'versatile' don't you think? (Yeah, bad pun, I know.) It's has decent HP and has a pretty neato second attack too...
1) Slowking - Neo Genesis. This card. Is the cream of the crop. This card is why the game got absolutely killed. Due to a mistranslation Slowking became...Godlike, your opponent practically could not play any trainer cards at all unless they were extremely lucky...