Cache of Highmaul Treasures

The Cache of Highmaul Treasures is rewarded from level 100, item level 645 Garrison Missions. There are four missions at each difficulty tier, and there are four tiers total. Players will be offered a mission for their followers complete that is one tier higher than what they are currently running. That is, non-raiders and Raid Finder runners will win Normal (item level 655) loot, Normal mode raiders will win Heroic (item level 670) loot, Heroic mode raiders will win Mythic (item level 685) loot, and Mythic mode raiders will win Mythic loot and a bonus.

These missions are unlocked once two Garrison followers reach item level 645. The missions have an eight-hour duration and a nearly week-long expiration timer.