From Bulbapedia, the community-driven Pokémon encyclopedia.
Blastoise has been featured on 18 different cards since it debuted in the Base Set of the Pokémon Trading Card Game. Blastoise cards are normally Water-type Stage 2 Pokémon. In Japan, Blastoise was featured in the Venusaur/Charizard/Blastoise Half Deck released in April 2004, as well as the Blastoise Starter Deck of the Battle Starter Decks released in November 2009.
List of Pokémon cards featuring Blastoise