User blog comment:ClariS/Why Xerath's Passive is Bad/@comment-174.77.37.141-20130317030912

Two things:

1. You're not taking into account AD champions that have long range: Jayce, Kha'zix's void spikes, Graves/Draven/Miss Fortune with their ultimates... and some of these reguarly or occasionally would be matched up against Xerath.

2. Xerath doesn't NEED to build any differently because the normal AP build benefits his passive. Why would he have any reason to change his build? That's like saying AD scaling abilities are bad on AD carries because they still build AD.