Lost Razorwing Egg in WoW gives players a way to grab a new mount, the Dusklight Razorwing.
Lost Razorwing Egg WoW: Everything You Need to Know
Korthia is the new zone added for 9.1, and acts as a hub for adventurers in Chains of Domination. Korthia is home to all sorts of secrets and loot to be collected, including the titular Lost Razorwings.
To obtain the Dusklight Razorwing mount, you will need to gather six Razorwing Eggs and deliver them to the nest from where they originate. Razorwing Eggs are collected from slaying Ravenous Gorgers, Colossal Worldeaters, and Nimble Scavengers. Farming from the Worldeaters and Gorgers will yield the fastest result, seeing as they are both grouped together.
Luckily, the eggs are not a unique drop, so you may as well collect all six required Lost Razorwing Eggs and then head to the nest for your reward.
A Dustwing Matriarch flies above the nest, a friendly NPC you cannot harm. Upon placing the first egg on her nest, a mob will spawn defending the nest. Placing the next four prompts a line of dialogue to open. Finally, placing the final sixth egg upon the Duskwing Matriarch's nest will cause the beast to descend, giving you your Dusklight Razorwing.