– Normal, Heroic or Mythic difficulty;
– Last boss Nzoth only, or 2 last bosses: Carapace & Nzoth.
ETA: Check the schedule.
– Normal mode: chance to get ilvl 455+ gear
– Heroic mode: Ahead of the Curve: N’Zoth the Corruptor Achievement
– Uncorrupted Voidwing mount and a chance to get ilvl 470+ gear
– Mythic mode: Cutting Edge: N’Zoth the Corruptor Feat of Strength and a chance to get ilvl 485+ gear
– You must have Ashjra’kamas, Shroud of Resolve to kill N’zoth, the Corruptor