User blog comment:Emptylord/Custom Champion - Yaga the Stray Little Witch/@comment-85.179.34.244-20120827093940/@comment-92.14.215.3-20120827171032

I don't think it would be any stronger than another champion buying magic pen. Actually, it may be weaker. Yaga's damage would benefit from the AP of Haunting Guise, magic pen would only increase the damage that's already there. Even a full tank won't get more than ~200, so her scaling is limited.