Hammer Blast

Warlock Invocation
Level: Least, 2nd lv.
Components: V, S
Casting Time: 1 standard action
Range: 60 feet
Duration: Instantaneous
Saving Throw: None
Spell Resistance: No

You transform your eldritch blast into a hammer blast. The blast deals normal damage to objects, rather than half.

(Complete Arcane, Page 134)