Blastoise (37) (37) [Expedition] Ox2 Discard 1 Psychic Energy card

Discard 1 Psychic Energy card attached to Mewtwo in order to use this attack

Set: HeartGold & SoulSilver: Unleashed Type: Water

Set: Best of Promos Type: Darkness Rarity: Promo Retreat cost: 1 [D] Entrap

Set: EX: Crystal Guardians Type: Colorless Rarity: Ultra Rare Retreat cost: Colorless

[2L] Thunder Blast (70)

Blastoise (37) (37) [Expedition] Ox2 Discard 1 Psychic Energy cardSet: Expedition Type: Water Rarity: Rare Retreat cost: 2 [1WW] Energy Cannon (40+) Does 40 damage plus 10 more damage for each Energy attached to Blastoise but not used to pay for this attack's Energy cost. You can't add more than 20 damage in this way.