I see that jamming net got an errata but I don't understand what the difference is. Can someone tell me what it did before the errata and what it does now? From what I understand the Pokemon that it is attached to would do 20 less to each of the opponent's Pokemons but not to it's own benched Pokemons or itself. That seems to be what it did before and that's still what it does from what I understand.
Jamming Net
The attacks of the Pokemon this card is attached to do 20 less damage to each of the opponent’s Pokemon (before applying Weakness and Resistance). (Don’t apply Weakness and Resistance for Benched Pokemon.)
How it was changed: This tool should only impact the Pokemon belonging to the opponent of the attacking Pokemon.
Jamming Net
The attacks of the Pokemon this card is attached to do 20 less damage to each of the opponent’s Pokemon (before applying Weakness and Resistance). (Don’t apply Weakness and Resistance for Benched Pokemon.)
How it was changed: This tool should only impact the Pokemon belonging to the opponent of the attacking Pokemon.