A Gate Too Far

Overview
Summary
 * Help Olaf cleanse the Shrine of the Raven Spirit.
 * Receive the Raven Blessing from the shrine.
 * Follow the  Destroyer Tremor trail to its source. (An Asura portal)
 * Use Raven's Flight to protect you from the Destroyer Tremors.
 * Receive Raven Blessing from Olaf.