Eternal Bow

Acquisition
The Eternal Bow can be found:

Core Nightfall
 * Underworld
 * Hall of Heroes
 * The Battle Isles
 * Isle of the Nameless
 * Zaishen Chest
 * Domain of Fear
 * Terrorweb Dryder
 * Gate of Pain
 * Terrorweb Dryder

Dye
Dye affects the inventory icon but has no noticeable effect on the item.