Electrode EVO 40, when attached to a pokemon, will cause Voltorb to be stuck in the area where cards being currently played are. If you use AZ PHF 91 on the pokemon the electrode is attached to while it is in the active position, it will create game-breaking effects.
1. When AZ is played, the turn will immediately end.
2. The opponent cannot attack
3. The opponent cannot use any cards that switch the opponent's active (Lysandre, Guzma)
4. When you draw your card, your turn immediately ends
There are many other effects, but the important part is you are stuck without an active pokemon for the entireity of the game, and are forced to draw and pass turn.