Hail Of Stone

Conjuration (Creation) [Earth]
Level: Sorcerer/wizard 1
Components: V, S, M
Casting Time: 1 round
Range: Medium (100 ft. + 10 ft./level)
Area: Cylinder (5-ft. radius, 40 ft. high)
Duration: Instantaneous
Saving Throw: None
Spell Resistance: No
You hold the jade chip before you and blow on it as you end the spell. The chip flares with a green flame and vanishes as rocks begin to fall on your pursuers.

You create a rain of stones that deals 1d4 points of damage per caster level (maximum 5d4) to creatures and objects within the area.
Material Component: A piece of jade worth at least 5 gp.

Source: Spell Compendium