User blog comment:Deshiba/Item concept; Guinsoo's Rageblade remake./@comment-5333760-20130521060122/@comment-5333760-20130523191406

Maybe you only read the first line, you don't get either Brutalizer or Haunting Guise for the AD or AP it gives but rather the Flat Penetration stat it gives for Armor and MR. Unlike Spirit Stone which is more like a sustain for junglers and since you gain spell vamp which is almost the same as HP regen, nothing is lost.