Wrath of Cenarius

The Wrath of Cenarius is a ring that will occasionally give bonus damage to your offensive spells.

Source
The Wrath of Cenarius is a quest reward from the quest Champion's Battlegear which starts with Vargus in the Cenarion Hold in Silithus. To complete the quest, you must turn the following items to Vargus:
 * 15 Cenarion Combat Badges
 * 20 Cenarion Logistics Badges
 * 20 Cenarion Tactical Badges
 * 1 Mark of Cenarius

You must also be Exalted with the Cenarion Circle.