Cool. So you guys level to 4 and buy some new equipment.
Also, here's an official write-up for Hail of Stone:
Hail of Stone
Conjuration [Earth]
Level: Sor/Wiz 1, Geo 1
Components: V, S
Casting Time: 1 standard action
Range: Medium (100 ft. + 10 ft./level)
Effect: hail of stones
Duration: Instantaneous
Saving Throw: None
Spell Resistance: No
This spell creates a hail of stones that strike a target on a successful ranged attack roll (not a touch attack). Use your caster level or your base attack bonus for this attack roll, whichever is higher. If the attack is successful, it deals 1d8 points of bludgeoning damage, plus 1d8 per two caster levels after 1st (max 5d8 at 9th level). If the attack is successful, it creates a square of difficult terrain where the target is struck. For creatures larger than medium, pick one of the creature's squares to be affected. Creatures cannot charge or run through the square, and it takes an extra square of movement to move out of it, nor can they five-foot-step in or out of the square.
If the attack misses, the rocks spread too far apart to hinder movement.