Amber Void

Amber Void is a dungeon & raids achievement earned for defeating Ley-Guardian Eregos in The Oculus on Heroic difficulty without anyone in your party using an Amber Drake.

Strategy
2 Ruby, 3 Emerald

Two ruby drakes will be used to switch tanking during an enrage phase. Two of the three emerald drakes will be dedicated healers while one is occasionally healing but mostly keeping the Touch the Nightmare debuff on the boss which will reduce the workload of healing through enrage damage. Whelps will never be an issue with both ruby drakes constantly spamming Searing Wrath on Eregos. Remember to have tanks switch off aggro in the middle of an enrage, keep up Touch the Nightmare, and this achievement can be done with ease.