Some gameplay tips:
Top 6 monsters that drop Zod (Monster / Difficulty / Drop Rate):
Hephasto The Armor Hell 0.00000651
Nihlathak Hell 0.00000651
Baal (First Kill) Hell 0.00000558
Diablo (First Kill) Hell 0.00000558
Baal Hell 0.00000488
Diablo Hell 0.00000488