Rift Reliquary
LegendaryCrates
“What lies inside wasn't hidden. It was locked away.”
Lies in the Mirror Lake (from 420 m) and opens only with the Mirror Key. Open it: Mirror Lake page, Treasures tab.
Sources
Mirror Lake, 420 m and deeper — on the hook, in a fish's belly or in a chest
Used in
Open with the matching key (Treasures tab)

