Now I love almost everything about this champ, but I feel like there's room for a much more interesting passive. It doesn't really have much to do with Xerath being an artillary mage and much like Lissandra's origional passive I feel like it really loses revelence as you get more mana and mana regen as the game goes on.

So I was wondering about an alternative, much like how dota has cast range as a stat I think it could be a cool addition to Xerath, even if his base ranges needed to be dropped to compensate.

For example, if every 100ap provided an additional 10% range to his abilities (possibly excluding his ult), then it gives Xerath a new way to scale into late game which optimistically caps out around double range for 1000ap.