Getting around Azeroth on a cool mount is half the fun in World of Warcraft, and the Stormcrow, Thrayir, Eyes of the Siren, is one of the coolest. This isn't the first raven mount, but its Siren Isle origins make it special. This mount is tied to a weather event called the Storm, occurring in phases within the Warlords of Draenor expansion zone. You'll need to collect five Runekeys from various locations on Siren Isle during these stormy phases. Here's how to claim this awesome flying mount:
How to Obtain Thrayir, Eyes of the Siren in World of Warcraft

The Whirling Runekey: This drops from Ksvir the Forgotten, a rare spawn in the southernmost room of the Forgotten Vault. He only appears during Storm phases.
The Torrential Runekey: Collect seven Torrential Fragments from any enemy on Siren Isle during a Storm.
The Thunderous Runekey: Gather five Thunderous Fragments from any chest on Siren Isle—these chests aren't tied to Storm phases.
The Cyclonic Runekey: Fish anywhere on Siren Isle during a Storm, or it might drop from Zek’ul the Shipbreaker in the Deadfin Mire.
The Turbulent Runekey: Find three Turbulent Fragments in these specific locations near Kul Tiran ghosts:
- Behind the abandoned inn, dig in the garden.
- Inside a cave in the Rotting Hole zone (the ghost is cowering inside).
- Inside the Spirit-Scarred Cave (the ghost offers the fragment).

Once you have all five Runekeys, head to the Forgotten Vault on Siren Isle only during the Seafury Tempest phase. Entering during any other phase won't trigger the ritual. Go to the eastern room of the vault.
You'll find Thrayir's body on a platform with five runestones. Insert the corresponding Runekeys, and you'll receive the quest "Thrayir, Eyes of the Siren." Complete the quest, and the mount is yours!