Malfunction

Transmutation
Level: Artificer * 4, Sorcerer */Wizard * 4
Components: V, S
Casting Time: 1 Standard Action
Range: close (25 ft. + 5 ft./2 levels)
Area: one construct
Duration: 1 round/level (D)
Saving Throw: Fortitude negates
Spell Resistance: yes
  This functions as confusion, except it only affects constructs, and instead of babbling incoherently, the construct takes no actions on its turn (but may still make Attacks of Opportunity).