You will need Staff of Herding in order to enter this rainbow happy island. There are a few materials required to craft Staff of Herding:
- Black Mushroom (I did in 2 runs.)
- Leoric's Shinbone (I did in 2 runs.)
- Liquid Rainbow (I did in 7 runs.)
- Wirt's Bell (I did in 1 run.)
- Gibbering Gemstone (I did in 11 runs.)
- Staff of Herding Plans (I did in 6 runs.)
This web site has a comprehensive walkthrough on how to get to Pony level. There is no need for me to describe here again.
To assemble Staff of Herding, I spent around 3 hours in total to obtains these materials. I put the number of runs in order to get materials above.
Enjoy the pony!