User blog comment:Emptylord/Leaked Champion: Vel'Koz/@comment-9705522-20140203160407/@comment-5781707-20140206050622

1) We actually know nothing about her having all her power from the Watchers

2) The acid part of Kog seems simple, but the amount of acid he splits far outclasses his side. 100% sure his inside is like a dimensional pocket of sorts

3)We know only a minimal fraciion of what void can gift. In humans ( who have no particular espectacular [being a seer is not all that mighty] power of their own before the void), void gifts  perform what you have mentioned: Teletransportasion stuff, dimension walking, void energy blasts.  On a different note it could simply enhance something incredibly, but at the cost of darkening it, as it might be with Lissa's ice.

As mighty Emptylord said, your argument seems based on "the void is purple and ice is blue; purple is not the same as blue"

I'm also pretty sure Lissandra is a extremely powerful entity completly on her own. Syndra seems baddass but is way too unreafined and unwise. Lissandra is even maybe even older than Xerath himself ( [...]Before the desert swallowed Shurima it was time of the Three sisters Avarosa, Serylda and me, Lissandra) or lived at the same time as he, making her even more cunning and knowledgeable than Xer as she didn't spend a millenia in a box. Ryze depends heavily on a book ._. ,Brand is a destroyer of worlds, and Lissandra has to be pretty powerful to beat him