The poisoned Status Condition is usually one of the weaker statuses, as all it does is make Pokemon gain a single damage counter in between turns, but there have been plenty of cards printed that can boost it to extreme levels
The Pokmon Company has actually made a few different TCG games, the most notable of which is the sequel to PTCG, which was also released on the Game Boy Color but never made it outside of Japan
You should be able to find decent uses for either of these cards even outside of the combo
The format in general has become tighter, more closely monitored, and, in reality, far more successful than it was just a few years ago
Being a red card means you can clear his way with red removals (Lightning Bolt/Unholy Heat)
A 3/2 with flash and lifelink that has Swords to Plowshares attached is incredibly powerful