It's sand Kings technique from Dota .-. its pretty simple really.. through the rapid release and manipulation of earth chakra the user changes the grounds consistency and properties into sand, similar to hiding like a mole technique, then upon movement in a direction the user chooses with incredibly fast movement, which leaves a trail of earth spikes above ground upon moving, once reaching the destination the user exits the ground at an incredibly fast pace, leaving behind a trail of earth spikes and dust clouds into the air which would effectively blind the opponent.
Fairly simple =] Best used when moving away from the opponent or moving underneath them.