To add to Pokechamp, Swampert GE goes along the lines of Gyarados SF, as Hammer Arm costs {W}{W}{C}{C} , does 80 damage (although I think Gyarados does 100 for 5 energy), and discards the top card of your opponent's deck (although I think the Gyarados just flips until tails and bumps off 1 card for each one).
Only thing that makes Swampert better is his Poke-Power, Wash Out, which gives your Water energies more fluidity (it's the same as Gardevoir-PL's Psychic Connect, but it works with {W} and {F} energy instead). Wash Out alone is a good reason to consider Swampert; he can have no energies when he comes out, but then draw 4 to himself and attack.