This quest was marked obsolete by Blizzard and cannot be obtained or completed.
In Winterspring, you will fight great flying creatures called da Chillwind. These beasts possess da power ta wield frost magics. If you wish ta gain resistance ta frost, bring me da E'ko you find from da Chillwind.
Rememba, you must have the Cache of Mau'ari in your inventory if you want ta hunt for E'ko.