From Bulbapedia, the community-driven Pokémon encyclopedia.
Cobalion has been featured on 5 different cards since it debuted in the Emerging Powers expansion of the Pokémon Trading Card Game. Cobalion cards are normally Metal-type Basic Pokémon. In Japan, Cobalion was featured in the Cobalion Strength Deck of the Battle Strength Decks released in March 2011.
List of Pokémon cards featuring Cobalion