This spell is a part of the Dust Devil spell chain and can be found in the Dust Devil rune stone.

By creating Boulder Dash, you create a source of earth magic that pumps out 1d6 boulders in every direction. The boulders roll to your appointed targets. If anything is in the way of the boulder from rolling directly to its target, it will hit that obstacle and crumble. If another target, whether it is an enemy target or an ally, gets in the path to a boulder’s target, the boulder will hit that target instead. The boulders will keep rolling in a straight path if they miss their target until they hit something else or leave the battlefield. Any boulder that leaves the battlefield crumbles upon doing so. You may assign a different target for each boulder produced and create the source of the boulders up to 7 spaces from your location. Each boulder does 7d20 points of physical magic damage on impact. 

Stat Cost: 55 Soul
Casting Speed: 5
Duration: instant
Range & Area: 1 target per boulder in straight line, source created within 7 spaces from your location
Physical Spell
Success Rate:  40
Max Success Rate:  70

This is a Tier 5 spell

Level 1: 150/250