Lucario

A well-trained one can sense auras to identify and take in the feelings of creatures over half a mile away.

Ability — Reflexive Retaliation: If this Pokémon is your Active Pokémon and is damaged by an opponent’s attack (even if this Pokémon is Knocked Out), put 2 damage counters on the Attacking Pokémon.

Aura Sphere (50): Does 20 damage to 1 of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)