The Goblin Gnome is a limited edition decoration available on FarmVille. It was originally released on the May 23, 2012 as part of the Castle Event, available for a limited time of 13 day to purchase from the Market for 12 cash with 1,200 experience gain.
The Goblin Gnome can be placed on the farm, or can be stored in either the Gnome Garden or the Storage Cellar.
The subject of this section was part of the Castle event, an event that lasted from May 23rd, 2012 to June 13th, 2012. Since the event has run its course, this may no longer be available.
Goblin Gnome Market Info (May 2012)