D&Dtools1

This spell functions like sword and hammer, except as indicated here.
The longsword and warhammer are sized for Large creatures, and each deals 2d6 points of force damage +1 point per three caster levels (maximum +10) on a successful hit.
Each weapon grants a +2 bonus on attack rolls.
Furthermore, each threatens critical hits as if you had the Improved Critical feat (the longsword on a roll of 17-20, and the warhammer on a roll of 19-20).