All in all I really like the Ryze Rework, but...
Mana is still relevant, his cc reliable and his poke has counterplay now (dodgeable Q).
But there's just one thing. ONE. That irritates me to no end. Why did you keep that ultimate? It was the most boring and unflashy part of the kit before and now it still is. You want AoE damage? Then why not some awesome skill? It's called "Desperate Power". How is walking a little faster and getting some spellvamp (a really bad mechanic in my eyes) in any way desperate?
You know what would be "desperate"? Consuming (almost) all your mana to blast your foes into oblivion. Or any other possibility that would go along with his kit. "Desperate Power" should be a skill that comes in when the normal spell pattern is no longer enough. Your "last resort" so to speak - and not your "muh let's activate my spell steroid for some little bonus"-skill...
Keeping the skill as it is seems like the biggest waste of potential I have ever seen.
is toxic.
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is satan.
is toxic.
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is toxic.
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is toxic.
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, and runes/masteries.
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has powerful low-cost, low-cooldown slow. Adding mobility would make it impossible for anyone without a gapcloser to get to her.
Or even, someone with a gapcloser.