How do you upgrade the Staff of Herding? [duplicate]

Question

Possible Duplicate:
How do I get higher difficulty Plan: Staff of Herding?

I've recently collected all of the parts for the Staff of Herding to enter Whimsyshire. However, the normal difficulty drops are a bit lacking, how can I upgrade the staff to gain access to better items?

Answer 1

The only way to get better items is to access the secret level in higher difficulties - for that you have to upgrade your staff.

Important to say that you have to start a quest where Izual is already dead on that particular difficulty for the merchant to offer the plans.

• Nightmarish Staff of Herding
• Hellish Staff of Herding
• Infernal Staff of Herding