User blog comment:Darksusanoo/(Champion Rework) Syndra, the Dark Sovereign/@comment-1330314-20150728224700/@comment-1920550-20150728225507

If you read the spell, you can only used deployed Dark Spheres, not the passive ones after the first cast so you'll still require alot of team support and set up times, by refreshing and cast Dark Spheres, so your first and second cast will always be weaker, but as they grow more powerful, the more casts you get. This will also take a toll on your mana bar, so overall this isn't a Katarina faceroll.

Also her passive is a simpler version of Viktor's passive, without taking up an item slot. I think in paper her passive fuels the gameplay fantasy of this mage with unlimited potential that just keeps growing stronger, the more she uses her abilities. Problem is her gained effects on live are so piss poor, it doesn't convey that feeling at all.