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- Location: Emerald Nightmare
Lumbering Mindgorgers are located in the Bough Shadow, Twilight Grove, Seradane, and Dream Bough areas of the Emerald Nightmare instance during the Dragons of Nightmare encounter.
- Collapsing Nightmare - Reality comes crashing down, inflicting 432250 to 477750 Shadow damage to players within 5 yds of the explosion and reducing their damage done by 50% for 9 sec.
- Crimson Moon - Periodically inflicts 256200 to 283170 Shadow damage to all players within 60 yds.
- Devour Nightmare - Upon reaching full energy, the Lumbering Mindgorger begins to devour the minds of all players, killing them.