User blog comment:Willbachbakal/(Champion Rework) Kassadin, the Void Walker/@comment-24795478-20150301091801

So, burst damage nerf, early game kinda the same or even better but late game mana cost is way to huge for a low damage spell like that. Your riftwalk kinda destroy assassin typical feature : a way to get to target without warning them from 1000 range away ( look at all the assassins, they all have instant gapcloser, skillshot-base or target ). 30% ms at lvl1 is just like a volibear's lvl1 Q. Even if he has ton of damage he still be useless, let alone a puny 510 base damage and 210% AP scale.

So my suggestion :

- Increase base damage significantly and scale a little. He now offer a lot of counterplay, so a damage buff is not too game breaking. maybe 70/105/140/180/220 (+80 % AP ) for Q and E, mana cost increases to 60/70/80/90/100 ( i think his early game laning weakness, which means low early damage, should be keep intact, to compensate for his late game power )

-Reduce Ulti cast delay to be the same as Ezreal

-Ulti ms buff : 40/50/60 % bonus MS, increasing multicatively by 15% per stack ( so at lvl 1 R, 1 stack will give kass 46 % MS, 2 stacks will give 52 and so on ).Themetically his Riftwalk will subsequently faster and faster, as he gain more control over the void. Max MS he can get is 96% ( still lower than Zilean, no need to worry )

Ult restriction : only 1/2/3 time(s) crossing terrain allowed ( You dont want him to go pass krug wall, red buff wall and the river bank in one go dont you?). And if he phase back in the middle of terrain, 10% max HP is drain per second instead of mana until leaving. The damage is non-lethal.

Last but not least, i afraid with this change he will be play as a tank with all those project tile nullify. Too much power if you ask me.