Sand Crawler

Sand Crawler, Maw of The Desert
Sand Worms are usually about 10-20 meters long. They are the apex predator of Shraa'Kharr desert and feed on anything they can find. Worms are completely blind and can't smell, but they can feel movement on the sand at great distances and are able to pinpoint the exact location of their prey up to 300 meters away.

Sand Worms called Shraa-Ressai in kharr dig their tunnels with use of primal earth magic. Kharr sand mages learned their art from observing young Worms. Their power grows with size and most of old sand worms can't fully control their powers - they unintentionally cause sandstorms when angry or hungry. Worms are extremely territorial and will attack any movement on their hunting grounds.

Story
Every place on Greavesoyl has it's own food chain. From small critters to apex predators, from rabbits to dragons, from sardine to kraken. Every creature from top of the food chain is feared and respected by other, but barely any predator dominated their ecosystem like things digging their nests deep under the sand of Shraa'Kharr desert.

Every old kharr from north deserts will warn you to run from the sandstorm, harbinger of Sand Worms. When they come touching sand means quick death - they hear everything that touches the ground from few hundreds meters and can reach it as long as it won't escape on rocks or buildings they cannot dig through. One bite is enough to knock down any possible prey, one slash of their claws shatters the bones while their venom melts the organs. Sudden and deadly, Sand Worms rule over the desert and when you see sandstorm on the horizon the only thing you can do is... run.

In-game
Sand Crawler moves under the map itself and jumps on his target when they least expect it. He can disable, burst them and escape back underground in just few seconds, but picking targets is crucial. Crawler can't duel fighters and tanks and should instead focus on eliminating squishy backline.

Trivia

 * Early concept of his kit included dragging enemies underground with him, but it was quickly scrapped.
 * Sand Crawler is the only assassin with more than one crowd control effect in his kit.
 * He has the lowest health regen from all character when not burrowed underground (not counting Ranhart, as he can't regenerate health naturally).
 * Sandstorm was named "Silesian Aura" in the function files before 1.3 update.