User blog comment:Darksusanoo/(Champion Rework) Syndra, the Dark Sovereign/@comment-1330314-20150728224700/@comment-1330314-20150729154421

Going back to this, my issue with your new ultimate is that you've made it a lot more binary:
 * The base damage is lower, so it would be harder to kill a target in the first place. This could be fine, as it would encourage Syndra to lay down more Dark Spheres to prep her ult better, but it also means she's going to suffer more when behind.
 * The reset on kill means she can deal exactly the same amount of damage she just laid down (plus an extra Dark Sphere, maybe) to her next target, and then the one after. This is ignoring different health values and setup and the like, but all else held equal, if you have enough damage to kill one person with your ult, the ability to cast it again and again means you'd have enough damage to kill everyone with your ult. If Syndra is ahead, she'd be much more likely to snowball single kills into multi-kills.

In summary, Syndra would have a much tougher time when behind, but would snowball a lot harder when ahead, which may or may not have been your intention. Her current ult is already somewhat snowbally, so I don't know if it was your intention to reinforce that on her.