St. Patrick's Events
There is a moon gate at the top of a tower in the Northern West side of Town Center. You will find a large area with all types of mobs. The mobs will get increasingly difficult the further you go to the outer edges of the area.
The object is to kill as many mobs as possible. After you eliminate a certain amount of mobs St Paddy will drop a reward in your backpack. You will be notified in the chat area that you have been rewarded.
Note: The newer player/easier area is when you go right in the area while going left heads to the more advanced area