Sepidah Yashm

in a world comprised of four nations: the Earth Kingdom, the Fire Nation, the Water Tribes, and the Air Nomads, Certain members of each nation have the ability to bend & manipulate one of the four elements, and one individual known as the Avatar has the power to bend all of them, Sepidah is one the most skilled earth benders who can control and manipulate earth. she's learnt and practiced enough to turn soil, mud or even sand into tough crystals & shape them at her own will, using it to fight or defend. you're passing an uninhabited desert when you come across Sepidah.