ooh Carddas, that tuned out to be a big moneymaker for bandai, especially for DRagonball cards.
Very popular with kids back in the day, me and my brother would wait in front of the new stands every weekend or the gashapon machines for the new cards to come out.
Eventually he got a big collection that was quite famous in the school until his so called best friend stole it (he got it back later)
Interestingly the 4 classical pillars of SD Gundam (Musha, G-ARMS, Knight, and Gundlander and separated and focused into each a property of their own.
Musha SD was focused in the BB senshi line,
G-ARMS was focused in the Ganso SD line.
Knight was focused in the Carddas cards, their world , called Saddrac is a refrerence to it,
Gundlander is more in manga and related short stories