Did you not Learn from Ryze?

nerfing a champion's damage like you're doing with veigar on PBE is useless^100000. All you're doing is hitting with random numbers his strength until you gut him. You nerfed ryze's damage at least 10 times since his mana rework. All it did was reducing a bit his damage every time. Eventually he ended up still being a problem in s3 where you nerfed WHAT REALLY WAS THE PROBLEM (which was his Q/W/E range) giving him counterplay since he had a low range. BUT HEY, his strength disappeared since you nerfed his damage.

Please learn from your mistake, if you nerf veigar's W damage you will nerf all his ability in the next patch he will just be gutted. Revert this nerf and increase his E cooldown, Q range nerf, or remove the target's AP ratio on his ulti.