Swampert EX (XY55) [XY: Black Star Promos] XY68 when a monster effect is

when a monster effect is activated on your opponent's side of the field (except during the Damage Step): You can detach 2 Xyz Materials from this card

Set: Legendary Collection 2 Card type: Normal Monster Rarity: Secret Rare Attack: 1200 Defense: 800

Set: Shining Victories Card type: Toon/Effect Monster Rarity: Super Rare Attack: 2400 Defense: 2000 Cannot attack the turn it is Summoned

Set: Enemy of Justice Card type: Effect Monster Rarity: Ultimate Rare Attack: 1200 Defense: 600 This card accumulates effects according to the number of monsters on your side of the field that include "Harpie" in their names (other than "Harpie's Pet Baby Dragon" and "Harpie's Brother")

you can select 1 monster your opponent controls

Swampert EX (XY55) [XY: Black Star Promos] XY68 when a monster effect isSet: XY: Black Star Promos Type: Water Rarity: Promo Retreat cost: Colorless,Colorless,Colorless