Guise of the Changeling
Quest reward from Guise of the Changeling. During the duration of the disguise you will move slower (even when mounted).
The 
Guise of the Changeling is a Shadowlands toy rewarded from a quest in Korthia that requires purchasing the 
Korthite Crystal Key from Archivist Roh-Suir after reaching Tier 2 research reputation with the Archivist's Codex.
Guide awaiting review
Reach Tier 2 Research
You must reach Tier 2 research reputation with the Archivist's Codex before you can proceed. Visit Archivist Roh-Suir at 62.73, 22.56 in Korthia to check your progress and access his vendor.
Accept the Missing Relics Quest
Once you have Tier 2 reputation, accept the Missing Relics quest from Archivist Roh-Suir at 62.73, 22.56 in Korthia.
Buy the Korthite Crystal Key
After accepting the quest, purchase the Korthite Crystal Key from Archivist Roh-Suir at 62.73, 22.56. This key costs 
25 Cataloged Research. Be sure to accept the quest first before buying the key.
Enter the Cave
Head to the cave entrance at 42.2, 41.01 in Korthia. The Guise of the Changeling chest is located inside the cave at 42.37, 40.86. Look behind the rift inside the cave to find the item.
Loot and Return Quest
Loot the 
Guise of the Changeling from the chest at 42.37, 40.86, then return to Archivist Roh-Suir at 62.73, 22.56 to turn in the quest. You will receive 250 Cataloged Research and 500 reputation with Archivist Roh-Suir.
Tips
This toy is part of the Reliquary Restoration criteria, so completing this quest also contributes to that achievement.
