User blog comment:BIA-Kaboose/Proposed Ryze Rework/@comment-24170465-20140121012859/@comment-8267817-20140123025309

I've never found the spell vamp incredibly useful myself, which is why I changed it to tenacity, I suppose the spell vamp was fine, though with the movespeed on the passive, it was more of a ramping effect, trading mana for movespeed to a degree.