Beginner (Explorer Class) can obtain Echo of Hero skill at level 200. To obtain the skill, please follow the steps below.
1. Go to Orbis Tower <8th Floor>
2. Locate the NPC Statue
3. Click on the NPC Statue and complete the quest "An Arrangement from the Goddess"
4. Upon completing the quest, Echo of Hero skill is available in your Beginner's Basics skill tab.