“Share some of your epicness by licking stuff, turning even the crappiest objects into useful, legendary Epics.”
To unlock Epic Goat, you will need to obtain poop and bring it to Will's Smithy. Once you go to Will's Smithy, you should find Will the Smith at an anvil. Drop the poop next to Will the Smith and stand on the anvil to obtain Epic Goat.
The Epic Goat possesses the ability to turn objects purple by licking them.