Marshtomp

Its sturdy legs give it sure footing, even in mud. It burrows into dirt to sleep.

Pound (20)

Muddy Bomb: Choose 1 of your opponent's Pokémon. This attack does 30 damage to that Pokémon and 10 damage to each of your opponent's other Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)