Silvally GX - SV79/SV94 - Shiny Holo Rare from Sun & Moon: Hidden Fates Shiny Vault, available at 401 Games Canada.

• Rarity: Shiny Holo Rare
• Finish: Holofoil
• Card Text:
  Ability — Gyro Unit
  Your Basic Pokemon in play have no Retreat Cost.
  [3] Turbo Drive (120)
  Attach a basic Energy card from your discard pile to 1 of your Benched Pokemon.
  [3] Rebel GX (50x)
  This attack does 50 damage for each of your opponent's Benched Pokemon. (You can't use more than 1 GX attack in a game.)