Recalculate the attack after a knockout, forced switch, discarded Energy, or failed coin flip
That boosts Sudowoodo's damage output to 70 damage against Arceus ex, which means Sudowoodo can knock out this powerful Pokmon with just two attacks
Maybe you have a couple of working cheats for Pokemon Classic
Timing this move well can swing the game by removing key threats without needing to hit massive numbers
As such, many of these cards are metagame calls, so if the meta doesnt have the right tools to punish, you might as well try out cards that make you lose
The only thing that you can safely trade for in bulk are commons/uncommons for decks (Yanma, Magnemite, Phanpy, etc), or average Trainer cards like Switch, Energy Retrieval, etc