Unlike Review, this is irreversible, the grade is gone once the case is open, but for cards where youre confident in the condition and the math still works at a higher grade, its a legitimate path
I've also bought several collections from friends or playgroup members who decided it was time to move on from the game
With the Pokmon Shining Fates expansion, you too are one of those lucky ones
While this attack deals a base damage of 20, it can deal a further damage of 80 for all psychic energy discarded from this card as a requirement of this move
The effect under the Supporter rule just isnt worth it anymore with much better ways to draw cards
A severe exploit in this manner is unlikely, however, given the lessons WoTC has already learned from older abusable counter-based cards in MTG