Disable Construct

Transmutation
Level: Artificer 6
Components: V, S
Casting Time: 1 standard action
Range: Touch
Target: Construct touched
Duration: Instantaneous
Saving Throw: Will half; see text
Spell Resistance: Yes

Disable construct transmutes the structure of a construct to deal 10 points of damage per caster level (to a maximum of 150 points at 15th level). If the construct successfully saves, disable construct deals half this amount, but it cannot reduce the target’s hit points to less than 1.