Jamming Net - 98/119 - Holo Rare from XY: Phantom Forces, available at 401 Games Canada.

• Rarity: Holo Rare
• Finish: Holofoil
• Card Text:
  The attacks of the Pokémon this card is attached to do 20 less damage to all Defending Pokémon (before applying Weakness and Resistance). (Don't apply Weakness and Resistance for Benched Pokémon.)
  When this card is removed from a Pokémon for any reason, put this card in its owner's discard pile.