Lucario (Burning Shadows 71/147)

Evolves from Riolu

Abilities

When you play this Pokémon from your hand to evolve 1 of your Pokémon during your turn, you may prevent all effects of your opponent's attacks, including damage, done to this Pokémon until the end of your opponent's next turn.

Attacks

Not only does it perceive auras, but it has also gained the power to control them. It employs them in battle.