Thunderlance

A faint grey, shimmering force in the general shape of a staff or spear springs from your hand. You can freely make the force retract or grow to any size between 1 ft. to 20 ft., but it always remains a straight lance of force. This gives you a natural reach of 20 feet. You can use the Thunderlance to make powerful melee attacks.

The Thunderlance strikes as a huge spear, dealing a base 2d6 piercing damage (x3 on a critical). You only need one hand to wield the Thunderlance, and you do not suffer the no proficiency penalties if you do not have the Simple Weapons proficiency. The Thunderlance strikes with a Strength score equal to 12 + your caster level (maximum +15) which replaces your own Strength score when you make attack and damage rolls with this spell.

If you successfully strike a target protected by any force effect of 3rd level or lower, such as a shield or mage armor spell, the Thunderlance may dispel the force effect in addition to damaging the target. Make a dispel check against the caster who created the effect. If you succeed, the effect is dispelled. The Thunderlance remains whether you succeed or fail at this check.

You can choose to attack objects or to use the Strength score of Thunderlance for Strength score checks involving breaking and damaging items.