The Stormbringer (Event) was a Gifting Event similar to Get the Power of the Ancient. It required the Mission Items Lightning Bolt, Storm Cloud, and Twister. You have 10 days to complete the set and earn the Epic Ability. The event began on August 2nd 2011 and ran until August 12th 2011.
Before the Storm
Master the might of the heavens and rain ruin upon the world. There shall be no calm before the storm, for you shall possess the power of the Stormbringer.
You must collect 30 of each item to complete the ability set.
Each ability had 3 levels of mastery. Mastery of all abilities earns the ability Stormbringer (Ability).