Title says all.
I've done around 50/60 charybdis level 20+ and I have a level 31 up now, and still no cards.
So I was wondering two things: is this bad luck or odds are really low? And: who's the unluckiest? (even if one could have a lv 45 char and never killed friends' and one could kill 300 level 20 charybdis but rhese are speculations ahah)