Shadowlands Zereth Mortis Rares and Treasures - Locations, Notable Loot
Why Should I Find Rares and Treasures in Zereth Mortis?
There are several reasons to kill rares and events in Zereth Mortis:
Rares are a good daily source of Cyphers of the First Ones and Cosmic Flux - These are used for the Cypher of the First Ones system and to fuel the Creation Catalyst/Legendary crafting.
In addition to this, killing rares in Zereth Mortis also grant reputation with The Enlightened - 10 to 15 reputation per rare per day.
Treasures in specific are an amazing source of Cosmic Flux, with most one-time treasures giving 200 Flux.
Rares in Zereth Mortis can help with gear catch-up - all rares in Zereth Mortis have a chance to drop ilvl242 gear.
For achievement hunters, killing all available rares and looting all treasures in Zereth Mortis grants a total of four achievements:
Killling 10 rares ( Adventures in Zereth Mortis) and finding 5 treasures ( Curious Collections) are part of the Unlocking the Secrets meta achievement, which unlocks flying in Zereth Mortis.
Killing all rares ( Adventurer of Zereth Mortis) and finding all treasures ( Treasures of Zereth Mortis) are part of the From A to Zereth meta achievement, the endgame achievement for Zereth Mortis with gives the Cryptic Aurelid mount.

Rare Mob Locations in Zereth Mortis
These are all the rare NPCs that appear in Zereth Mortis.
NOTE: The following rares have a chance to not spawn every day. To see what rares are available for the day in Zereth Mortis, check the Today in WoW section on the front page of Wowhead.
Akkaris Location：64.8 33.8 Special Drop：Sandworn Relic
Chitali the Eldest Location：50.8 66.8 Special Drop：Cervid Lattice and Chitali's Command
General Zarathura Location：60.0 20.8 Special Drop：Glimmer of Malice and Sandworn Relic
Gorkek Location：76.6 44.8 Special Drop：Bufonid Lattice
Hadeon the Stonebreaker Location：52.2 26.0 Special Drop：Scarabid Lattice
Helmix Location：59.2 68.6 Special Drop：Glimmer of Discovery
Sorranos Location：35.8 70.8 Special Drop：Vombata Lattice and Formula: Cosmic Protoweave
Tethos Location：54.4 72.8 Special Drop：Geomental Lattice
Vexis Location：39.6 57.6 Special Drop：Lupine Lattice and Vexis' Wisest Fang
Xy'rath the Covetous Location：64.0 49.6 Special Drop：Xy'rath's Signature Saber and Xy'rath's Booby-Trapped Cache
Vitiane Location：47.2 47.2
Euv'ouk Location：47.6 45.4