You can do this manually, but we have technology, which means apps
Cure Mermaid X WATER Level 4 [ Fish / Effect ] ATK 1500 DEF 800 As long as this card remains face-up on your side of the field, increase your Life Points by 800 points during each of your Standby Phases
The strategy is to play Mewtwo in the active slot after you have built up enough energy and then use Gardevoirs Psy Shadow ability to refill Mewtwos energy for Psydrive each round, pulling an extra energy alongside the one you are automatically given every round
They sped things up considerably and changed the rules in some pretty significant ways
First, most overpowered cards are still overpowered when they're restricted, so, in formats where there are only a few restricted cards, all that restricting overpowered cards serves is to add randomness to the game
1st Edition 1st Edition cards are pretty self-explanatory these were among the first wave ever printed and distributed, and as a result, carry the highest collector value