From Dota 2 Wiki
|Capturing the majestic call of an eagle, this mystical horn brings limitless dexterity to those who hear it.|
- One Eaglesong grants a total of 4.17 armor and 25 attack speed (and 25 attack damage to agility heroes).
- Eaglesong is referenced in the "Tales from the secret shop" comic.
- In the original DotA, this item was named Eaglehorn, a reference to a unique bow in Diablo II.