im hunting the Giant Centipede in "Chaina - Western Prairie I" for over 50 times and it seems that he doesn't drop the boss card. i may sound quite unpatiant with this thread but i think he should drop the card more due to him being a boss. but i also think he is not titled as a boss because he does not drop nx and doesn't show boss health bar when attacked.
you're killing centipedes that are just laid out throughout shanghai the giant centipede that drops the card + nx requires you to complete a questline and do a short jq
