Dunestalker

 

Prior to awakening, rogues must rest under the sands of the desert during the point where the moon is directly above the land of Raaisel. During the night of the ritual, the rogue's heart will be converted into either jet or stone. If their heart turns to stone then they die.

Black Sand Cloud

Upon landing a Sneak Attack, you quickly use your cunning action to create an explosion stunning the target and concealing a 15ft. radius in a cloud of black sand. The sand cloud lasts 1d4 rounds and cannot be recast until it has vanished. If magical fire makes contact with this sand cloud then the cloud will detonate and deal 3d8 fire damage to all tokens currently standing in it.

Desert Wind

Using your cunning action, you silently shift into a cloud of transparent dust and move 15ft. in any direction. If you move within 5ft. of an enemy token then you can perform a Sneak Attack on them without it counting against your number of actions.

Sandstorm Flurry

While concealed or hidden within sand, the Dunestalker goes into a silent fury which grants them an extra attack and additional AC equal to their Charisma modifier.

Baneful Mirage

With a fistful of sand you create a mirage of yourself that is capable of interacting with the environment and rolls advantage on Stealth checks. This mirage, however, can only perform cunning actions and move actions. Summoning another mirage will result in the previous one instantly dying. Mirages die instantly if a token succeeds in making an Investigation check to work out if its an illusion or after 1 hour has passed.

When initiative is rolled then the mirage would share your initiative and would have a turn directly after yours. 

Desert Eclipse

Performing a Sneak Attack while concealed in sand will result in 1d4 sand duplicates to appear around the target and perform consecutive slashes. Each slash deals half the original damage of the attack.