Use the Raging Vortex Gem at Nijel's Point Ruin. While commanding your firestorm, kill 40 Nijel's Point Defenders and burn 15 Nijel's Point Merchants.
Should you lose your Raging Vortex Gem, you may acquire another from the Ancient Vortex Runestone.
You cannot help but to feel a twinge of pride, having unlocked this long lost secret of the ancient worshippers of Elune.
You now possess the power to inflict great damage upon your enemy.
As it was Furien's tireless work that made this possible, it only seems right that the weapon should be unleashed upon those who took his life.
The Alliance scum at Nijel's Point shall pay for their offenses against the Horde!