What veigar needs
Q (Baleful strike)
Cooldown changed to 7/6.5/6/5.5/5 to 8/7/6/5/4 (back to old cooldown)
W (Dark matter)
Delay reduced to 0.8s from 1.25s (element of comparison : Kog'maw's ult has 0.6s delay)
E (Event Horizon)
Warning indicators appear before cast time -> after cast time.
(Essentially the time to pull off the stun is the same, but the warnings come a little bit later. The warnings duration finally matches the description of the spell (0.5s) because now it's 0.5s + cast time (which is 0.25s and is also counted in the warnings duration, when it shouldn't). )
[POSSIBLE NERF IF VEIGAR SUPP IS TOO STRONG -> Stun duration 1.5/1.75/2/2.25/2.5 -> 1.6/1.7/1.8/1.9/2 And/Or Cage duration 3/3/3/3/3 -> 2 + 0.2% AP, capped at 3 (obtained at 500 AP)]
Aaaand that's it. Mostly QoL/reliability changes. He still has a bit of an identity crisis, if that's not enough we should probably consider reworking his R and/or adding interactions with E and his other spells.
doesn't take 90% of the enemies health away with his ability, though