As long as this Pokémon is in the Active Spot, your opponent's Active Pokémon can't retreat.
If your opponent has a Stadium in play, discard it. If you discarded a Stadium in this way, during your opponent's next turn, prevent all damage from and effects of attacks done to this Pokémon.
I ordered 3 tins, and they made sure to send 3 different designs, thanks! Sadly 1 tin did arrive with a dent in it. It also took almost a week to be shipped.