User blog comment:BestNaPlayer/Xylan the Grand Wizard/@comment-24801274-20140510061010

Huge inconsistencies on this one.

First his Q: Huge cooldown, and considering its his only non-ulti method of dealing damage, that would render him useless in lane. Also the mana scaling could be tweaked

W: Due to the champion having mostly descending mana scaling, this ability is near useless since it makes him have an infinite supply of mana. The stun is extremely unreliable considering it would take a while to drain someone like lets say Nidalee or Ryze. Also this ability would be absolutely useless against some energy mids like Zed, making him super vulnerable to them

E: This thing is basically Kayle's ult on steroids. Longer duration than her ult, on a much shorter cooldown. Running on 40% CDR would make him literally be impossible to kill as he would be under invincibility half of the time.

R: Unbelievable AP ratio and the base damage could also be tweaked a little, considering this is technically a skill-less Xerath ult. Also its cooldown and mana required are absolutely way out there.

Then theres his passive... with extremely high cooldown on Q, R, and E not being able to keep it up well, it is literally a pointless ultimate since its never going to go beyond 1.5% CDR unless the W were to proc it too, which would STILL render it kind of useless.