It truly is a dark day when I agree with something Fdru says. Thought for the ultimate: % mana cost on additional stacks?
I'd just like to point out he wouldn't really be able to lane with 600 range trading spells, everything but annie would outrange him...
Post-6 the range on the rest of his kit is totally irrelevant when he can gap close, harass, and run back out without taking a hit of ability damage. He's too safe with all that CC if he doesn't have to give up something for it - I will bump up his jump to 600 range, though.