This spell creates a brilliant globe of magical energy, which streaks forth from the caster's hand to unerringly strike its target, much like a magic missile spell. The target must be seen or otherwise detected.

The wizard creates one missile at 7th level, and an additional missile every three levels after 7th—in other words, two missiles at 10th level, three at 13th, four at 16th, and so on.

Each missile inflicts 6d4 points of impact damage upon the target creature, and then bursts in a concussive blast that inflicts 1 point of damage per level of the caster to all within in a 5-foot radius. For example, a 12th-level wizard could conjure two force missiles, each of which strikes for 6d4+12 damage. A target creature that makes a successful dexterity saving throw negates the concussion damage, but the impact of the missile itself allows no saving throw.

As with the magic missile spell, the force missiles can be directed at as many or as few targets as the caster likes. The missiles can damage or destroy inanimate objects, especially fragile or delicate items. Sturdy objects, such as thick stonework, are unlikely to be affected.

(Wizard‘s Spell Compendium Vol.3, Pgs. 595-596)