From Bulbapedia, the community-driven Pokémon encyclopedia.
Eeltwo is the name of the deck used by Chase Moloney, the Senior Division Champion in the 2012 World Championships. It is one of the four 2012 World Championships Decks, released in November 2012. Each deck comes packaged with a 2012 World Championships Booklet, Deck Box, and Special Pin. Each card features a silver border, Moloney's signature, and limited edition 2012 World Championships back. None of the cards are tournament legal.
Senior division World Champion Chase Moloney built his deck for speed and survivability: two things no opponent likes to come up against! Mewtwo-EX and Raikou-EX provide the majority of the firepower, while Eelektrik's presence ensures not only that there's always Energy available to unleash big attacks, but also that Max Potion's cost is no concern. Support comes from Professor Juniper and others combining to provide quick card-drawing—electrifying the pace and shocking your foes!