Shimmering Aurelid

Reward of the achievement Glory of the Sepulcher Raider: earn the boss achievements of the Sepulcher of the First Ones in Zereth Mortis, one for each of its eleven bosses, on Normal difficulty or higher. Progress is account-wide and is kept between visits.

Inside Sepulcher of the First Ones, a raid (Normal or higher)

Time there about 3 h a visit

Guides Wowhead: Glory of the Sepulcher Raider (achievement page; the top comment is the boss-by-boss walkthrough, with maps) · wow.gg: Shimmering Aurelid · Icy Veins: Glory of the Sepulcher Raider Guide

• A way onto the raid's island in the east of Zereth Mortis: the Ancient Translocator in Haven, which opens fully with The Pilgrimage Ends in chapter 4 of the zone's campaign, Secrets of the First Ones. wow.gg says a character that can fly in Zereth Mortis can fly straight to the entrance instead · about 4 h
• Six players in the raid at the same moment for Shimmering Secrets (Halondrus the Reclaimer): six strange artifacts lie along the route of the fight, a character can pick up only one, and the carriers bring them to the last room, where six Strange Constructs appear and have to be killed before the boss
• A Death Knight in the raid for Power ON (Vigilant Guardian), going by the Wowhead walkthrough: the Depleted Automa stands switched off outside the arena, is pulled in with Death Grip before the fight, comes alive when other automa are killed beside it and has to die before the boss
• An engineer's Reaves for The Protoform Matrix (Lihuvim): Reaves is summoned on an empty synthesis spot before the pull, the boss turns it into the Reaving Automa: Neo, and that has to be killed before Lihuvim

In all: about 4 h of play, starting from nothing.

/way is for the TomTom addon. Travel times are estimates: flying at 55 yards a second in a straight line and 30 seconds for a portal. A star marks a portal that needs a quest or other unlock done first.

By boss (criteria from Wowhead's tooltips and Icy Veins, the how-to from the top Wowhead comment, 2022):

• Vigilant Guardian, Power ON: the Depleted Automa killed first
• Skolex, Wisdom Comes From the Desert: it burrows under and destroys all four Memorial Pylons, in the order their tooltips give
• Artificer Xy'mox, Xy Never, Ever Marks the Spot: all players under the effects of three pilfered artifacts, which appear at the pull, at 75% and at 50%; one player touching each is enough, and anything that removes slows strips one of them
• Halondrus, Shimmering Secrets
• Dausegne, Four Ring Circus: a player carries the Afterlife Core at the kill
• Prototype Pantheon, Where the Wild Corgis Are: every player pets five corgis during Wild Stampede
• Lihuvim, The Protoform Matrix
• Anduin Wrynn, Coming to Terms: three Haunting Memories collected before the pull, then Anduin's Grief killed
• Lords of Dread, Amidst Ourselves: a small lights-out puzzle solved during Infiltration of Dread
• Rygelon, We Are All Made of Stars: all players under Herald of the Cosmos; a death fails it
• The Jailer, Damnation Aviation: six Progenitor Orbs collected in the first phase, reached with the knock-up of the Runes of Damnation

The sources disagree on the count: Wowhead's criteria for the meta-achievement (page and tooltip) list ten and leave out Coming to Terms, while the wiki and Icy Veins list eleven. Doing all eleven covers both.

Six is the least for Shimmering Secrets by its own mechanics; a 2025 Wowhead comment says at least two of the achievements cannot be done with fewer than six, and which the second is was not established. A 2025 comment on Shimmering Secrets says it only counted when the constructs were allowed to finish a cast before dying, and advises tracking the achievement and watching it turn white.

The time on the spot is an estimate for one clear doing every achievement: a 2024 comment describes a group of 15-22 that needed three tries on Halondrus and five or six on the Jailer.

Wowhead has no guide of its own for this achievement (its page lists only the raid overview and the 9.2 mount guide), so the first link is the achievement page, whose top comment is the walkthrough. wow.gg's guide (updated 2026) covers the way in and every boss but garbles several achievement names; Icy Veins (2022) only lists the criteria. The entrance is from the game's own data. Wowhead says 13% of profiles have the achievement.

Confidence in this entry: medium. Looked up in 2026.

Sources

• Wowhead: glory of the sepulcher raider
• Wowhead: shimmering secrets
• Wowhead tooltip: achievement 15491
• Wowhead tooltip: achievement 15386
• Wowhead tooltip: achievement 15399
• Wiki: Glory of the Sepulcher Raider
• Wiki: Sepulcher of the First Ones
• wow.gg: shimmering aurelid mount guide
• Icy Veins: glory of the sepulcher raider guide how to get the shimmering aurelid mount