@Sillvog, do you know if we can trade? I don't have mine yet, but when I do, if I get one of the two pastels, I'd be happy to trade with you.
Some brilliant person (I can't remember who) noticed during the Drakes event that Hell Pumpkins seemed to drop more frequently on a certain biotype for a while (half a day or a day or something) before switching to a different biotype. It's hard to tell with these statistical things whether that's an illusion or not, but I was having good luck in the Grasslands in the morning, and then at some point was barely finding anything, and switched to the Savannah, and suddenly they were everywhere again. So if anyone is having bad luck in one biotype, you might try switching to one of the others and see if your luck improves.