Eternatus VMAX - 192/189 - Secret Rare from Sword & Shield: Darkness Ablaze, available at 401 Games Canada.

• Rarity: Secret Rare
• Finish: Holofoil
• Artist: 5ban Graphics
• Card Text:
  Ability — Eternal Zone
  If all of your Pokémon in play are Darkness type, you can have up to 8 Pokémon on your Bench and you can't put non-Darkness Pokémon into play. (If this Ability stops working, discard Pokémon from your Bench until you have 5.)
  [1D] Dread End (30x)
  This attack does 30 damage for each of your Darkness Pokémon in play.