Kassadin, the Voidminion

as for the recent changes(PBE):

Kassadin Riftwalk ( R ) Subsequent Riftwalk cost and damage multiplier period increased to 20 seconds from 12

Maybe it´s time for you to finally admit that your so called "rework" hadn´t been a rework at all. You did not shift his patterns in the slightest. It´s still Step in (from out of sight/reach)) - have instant effect (dmg/slow) - wadle away or continue to kill depending on the Situation.

So for a rework to actually have an effect and keep his Ult as his trademark the follow things are required:

• change his Abilities so he actually has to stay in melee-range to be effective...if he just steps at you and goes away the next second he should not be able to harm you much with that. e.g.:
• w should be actuall dps like Teemo and Kayle, not Burst.
• q have a mechanic similar to Vayne and only procc dmg+silence after 3-4 continued attacks
• e should scale with the number of targets hit, so it still is a powerful slow in teamfights, but not so much a free pick whenever a target is slightly out of position
• the AS-steroid on his passive should be brought back in, the dmg-recuce maybe a tad bit lowered
• The Silence has to be brought back in, it´s as much of his Identity as his Ult (he even jokes about it)..for a pattern that allows counterplay look above
• His Ult should have a rather high CD if he doesn´t Step into a Champion, so he´s mobile in fights - but not abusivly mobile on the map