User blog comment:Megames1/Against the Meta- Xerath, and More!!/@comment-3974211-20121022133150/@comment-4929329-20121024041354

That passive is, simply put, OK as a late game passive, but it's OP for early game (talking about levels 1-6). Your passive essentially does 540ish bonus damage at level 6. That's basically LeBlanc's combo, in AoE form, from 300 more range, with over twice the damage.