http://diablo.wikia.com/wiki/Staff_of_Herding

The Staff of Herding allows access to Whimsyshire, the secret easter egg level in Diablo III.

Items required to create the Staff are:

    Black Mushroom (act 1 cathedral)
    Leoric's Shinbone (act 1 leoric manor fireplace)
    Liquid Rainbow (act 2 dahgun oasis mysterious cave)
    Wirt's Bell (act 2 merchant)
    Gibbering Gemstone (act 3 cave of frost chiwawa boss)

Once you acquire all of the materials you must craft the staff using Plans: Staff of Herding. Once the staff is complete take The Old Ruins waypoint (Act I) and head west down Old Tristram Road[1]. Hug the south wall. There should be a Skeletal Corpse and a "rift" in one of the crevices in the ground. If you have the Staff, the Ghost of the Cow King[2] will appear with a quest above his head.

You need a new staff for each difficulty. The plans can be found by the Merchant in Bastion's Hold.

The plan drops randomly off Izual in normal mode. After defeating Izual in the harder difficulties, the plans may be bought from Gorell the Quartermaster beside the Armory in Bastion's Keep Stronghold.

http://images3.wikia.nocookie.net/__cb2012...g/180px-Tck.jpg

http://diablo.wikia.com/wiki/Staff_of_Herding

The Staff of Herding allows access to Whimsyshire, the secret easter egg level in Diablo III.

Items required to create the Staff are:

    Black Mushroom (act 1 cathedral)
    Leoric's Shinbone (act 1 leoric manor fireplace)
    Liquid Rainbow (act 2 dahgun oasis mysterious cave)
    Wirt's Bell (act 2 merchant)
    Gibbering Gemstone (act 3 cave of frost chiwawa boss)

Once you acquire all of the materials you must craft the staff using Plans: Staff of Herding. Once the staff is complete take The Old Ruins waypoint (Act I) and head west down Old Tristram Road[1]. Hug the south wall. There should be a Skeletal Corpse and a "rift" in one of the crevices in the ground. If you have the Staff, the Ghost of the Cow King[2] will appear with a quest above his head.

You need a new staff for each difficulty. The plans can be found by the Merchant in Bastion's Hold.

The plan drops randomly off Izual in normal mode. After defeating Izual in the harder difficulties, the plans may be bought from Gorell the Quartermaster beside the Armory in Bastion's Keep Stronghold.

http://images3.wikia.nocookie.net/__cb2012...g/180px-Tck.jpg