Porcellio Card ??

[Neuneck]

After killing 5000 Monsters of a kind you have a
77.69 % chance
of getting the card...
You're just as unlucky as somebody not getting a 75% drop on the first kill!
Don't give up. The chance may never reach 100%... but it'll become very close to that after 5000 more porcellios (after 10k it's 95% chance)
The Worst thing to do would be giving up now, when you're invested so much time and effort already...