TachiVan is a clan used for promo cards packaged with Vanguard Radio CDs. They can't be used in Tournaments. The cards in this clan appear to ignore the standards of most cards (Grade 4, more than 1 critical printed, Power not in intervals of 1000, Grade 3 card with Boost instead of Twin Drive, grade 3 with 10000 guard etc.).
List of TachiVan Cards