[XY] Pokémon Team for Restaurant Le Wow

[Hyker]

I recently found out that battling at Restaurant Le Wow is much more efficient than going through the Elite 4 every single time. I choose the Triple Battle because of the 20% extra EXP when the Pokémon I want to evolve is fighting. The problem is that the Team I'm using (Swampert with Earthquake and Mew with Surfer) aren't enough to kill all 3 in one round. So my question is, which 2 Pokémon would you choose to fight ? I'm searching for a Team with 2 Pokémon with a move that hits all three enemies. The 3rd spot is reserved for the Pokémon I want to train.

Thanks in advance!