Gastrodon
Pokémon from Steam Siege set
Attacks
Sticky Shot
20
During your opponent's next turn, the Defending Pokémon's attacks cost Colorless more, and its Retreat Cost is Colorless more.
Water Pulse
60
Your opponent's Active Pokémon is now Asleep.
Weakness
×2
Resistance
-
Retreat cost
It apparently had a huge shell for protection in ancient times. It lives in shallow tidal pools.