From Bulbapedia, the community-driven Pokémon encyclopedia.
Metagross has been featured on 18 different cards since it debuted in the EX Hidden Legends expansion of the Pokémon Trading Card Game. Metagross cards are normally Metal-type or Psychic-type Stage 2 Pokémon. In Japan, Metagross was featured in the Metagross Constructed Starter Deck released in January 2004, as well as the Leafeon vs Metagross Expert Deck released in November 2009.
List of Pokémon cards featuring Metagross