From Bulbapedia, the community-driven Pokémon encyclopedia.
Steelix has been featured on 18 different cards since it debuted in the Neo Genesis expansion of the Pokémon Trading Card Game. Steelix cards are normally Metal-type Stage 1 Pokémon. In Japan, Steelix was featured in the Steelix Constructed Standard Deck released in February 2010.
List of Pokémon cards featuring Steelix