Changing the Wind's Course

At last, we have all that we need to right the wrongs of the North Wind and its followers. You have attuned the Lorehammer to Stormhoof's time and his persona. Take the hammer again, head to the Temple of Life in the plains to the northwest. Use the hammer to assume the role of Stormhoof. Face the North Wind as Stormhoof, but realize that for the timeline to be restored, Stormhoof must die as the North Wind weakens. Then, you must find and use the Horn of Elemental Fury to destroy the North Wind.

True timeline restored