For Fjordur players: These are found in Asgard (middle portal) and in a cave of radiation (you will need a hazard suit). To get an egg without being touch by any rock drakes, use a desmodus (immune to radiation). Enter the cave at night and use invisibility. Find the egg you want then grab it quickly, hop straight back onto the desmodus and get away from the floor and walls and go straight for the exit. Extremely effective.

Also you can get nameless venom in the aberration cave (coordinates= 57.2 lat, 85.1 lon). Desmodus is also effective here. Hope this helps.