Get the Quest:
Portal Activation: Sanctuary
given by Archarcanish Kirstmyof in Katta Castrum
Step on the teleportor pad at location -4365, -1800
A mob named "chaotic portal energy" spawns, and attacks, its not snare/root about but doesn't run as fast as sow, hits around 1200 or so maybe more.
Kill it and you will get credit on your quest and get this item.