A MEGA, EX Pokemon Card of type Water with the title M Swampert-EX and 220 HP of rarity Promo evolved from Swampert-EX from the set XY Black Star Promos.  It has the attack Strongarm Impact with the cost Water, Water, Colorless, Colorless, the energy cost 4 and the damage of 130+ with the description: You may do 30 more damage. If you do, discard the top 3 cards of each player's deck. It has weakness against Grass 2. 
M Swampert-EX