Sand Burst is a spell that enable the user to conjure bursts of sands from the ground.
A spellcaster uses his/her magic to manipulate molecules of earthly materials on the desired area by morphed a portion of them into sand before have the sand unleashed a burst of force, sending everything around the blast flying. Had the desired area had a large amount of already pre-existing sands, he/she had greater advantages as he/she only need to manipulate available sands instead of have the sand molded from available earth materials before casting the spell.
The only known drawbacks of the spell is it still require earthly materials (sand and/or mud, marbles, concrete, rocks) to work.
The only known user of this spell is The Mummy, one of the Drill Automatons.