Recently, the Kvaldir took over their city and began sacrificing their members to awaken Leviroth, a being imprisoned in the waters below by Azshara five hundred years ago. When they ran out of naga, they began to take tuskarr. Their spirits will know no peace.
Raj Naz'jan was the emperor of Riplash when Leviroth was imprisoned, and Azshara herself blessed his trident so it would slay the beast should it ever escape.
They were using massive generators to melt the surrounding glaciers and ice caps, threatening to flood the entire region.