Keldeo EX - BW61 - Promo from Black & White Promos, available at 401 Games Canada.

• Rarity: Promo
• Finish: Holofoil
• Artist: Toyste Beach
• Card Text:
  Ability — Rush In
  Once during your turn (before your attack), if this Pokémon is on your Bench, you may switch this Pokémon with your Active Pokémon.
  [3] Secret Sword (50+)
  Does 20 more damage for each Water Energy attached to this Pokémon.