Thundering Scale of Akunda

SS Companion

Thundering Scale of Akunda teaches you how to summon a Thunder Lizard Runt.

Pet Journal
The large plates on the back of this lizard are made of a mysterious but highly conductive material, making it ideal to charge up and expel massive amounts of electricity.

Source
Thundering Scale of Akunda drops from the Conclave of the Chosen in the Battle of Dazar'alor.