I get cards every now and again. That is to say I used to before I got FFT and stopped playing this game because FFT is so much better.

One time I was about to finish the mission, forgot about the "No Blades" Rule, attacked with Marche, killed the guy, and got an instant Red Card. It was the protect the Summoner Mission which is REALLY hard because of all the Vampires who cast Lv.?Flare which ALWAYS seems to hit her and kill her in one shot. That one took me forever.