User blog comment:Emptylord/Season 3 - PBE Patch Notes/@comment-67.85.4.191-20121110014541/@comment-4022742-20121110165449

they allready announced a new build path for it on Twisted Treeline, it was in the PBE too if I remember Correctly. I honestly get Haunting Guise for early damage on Gragas, and buy CDR boots, because I will probably swap the Haunting Guise for a Void Staff late game which made the 20 magic pen from sorcs just 10-ish, meaning not worth it.

What I'm really wondering is if they are swapping around the way magic penetration like they did for armor penetration? It would really influince the worth of these items too :D