I would say: Base Charizard (any variant) Base Blastoise (any variant) Base Venusaur (any variant) Base Pikachu (any variant) Base Machamp (any variant) (not that Machamp is popular, just seems that everyone had this card)
Secondary market prices range from 5,000 ($34) for Shiny Treasure ex to 900,000+ ($6,120+) for vintage sets like GX Battle Boost
The Fallout Path to Exile is my favorite version of that card by mile
Named after the original Wheel of Fortune, these effects can refuel your hand, disrupt opponents who spent turns sculpting the perfect grip, and feed into some truly disgusting synergies
At the end of each of your turns you can choose to have one opponent lose life equal to the life that they lost that turn, or you can gain life equal to the life you've gained that turn
For maximum enjoyment, read this article with an Irish accent