Once again, farming
Stygie in extreme amounts without incurring Eye of the Jailer is likely considered an Exploit and may be reprimanded by Blizzard, especially since
Stygie awards player power.
There is a cave located at (47, 76) in the Maw which has some eggs in it, and stepping on the eggs will spawn
Petit cafard de l'Antre. These respawn rapidly, allowing for a quick farm.