Really really really broken Veigar buffs I would add (why i don't work at riot)

Passive: Phenominal evil: Veigar gains 1 ap perminently whenever he hits an enemy champion with any of his abilities. For every 10 ap gained Veigar also gains 1 mana. Perfect Phenominal evil: Veigar gains 1% bonus ap and 1% bonus mana perminently whenever he kills an enemy champion with primordial burst.

Q: Baleful strike: Veigar fires a bolt of dark energy passing through up to 2 targets dealing magic damage. Veigar gains 1 ap for every small minion and monster killed and 2 ap for every large minion, monster, or champion killed.

Q Passive: equilibrium: Veigar gains 1% mana regen for every 1% of his maximum mana he is missing. Additionally Veigar gains 5 ap whenever he gets a kill or assist.

W: Dark matter: Veigar summons a meteor which falls after a brief delay dealing aoe magic damage and slowing every target hit by 5/7.5/10/12.5/15% for 1/1.15/1.3/1.45/1.6 seconds.

W Passive: Revitalization: Veigar heals 1/1.5/2/2.5/3% of his missing health for every unit killed and 10/12/14/17/20% of his missing health for every enemy champion killed by Dark matter.

E: Event horizon: Veigar dashes a short distance (Not over terrain) before creating a hexagonal cage for 5 seconds which empowers his other basic abilities. Enemies inside the cage are grounded and those who touch the walls are stunned for 1.5/1.75/2/2.25/2.5 seconds. The .5 second delay decreases by .1 seconds for every point Veigar has in primordial burst.

E Passive: Entropy: Veigar steals 5 armor/magic resist and 5 ad/ap from every unit trapped inside Event horizon's cage.

Empowered Q: Perfect Baleful strike: Veigar fires a bolt of dark energy that can hit an infinite number of units but can only hit 2 enemy champions. It homes into the closest 2 champions trapped inside Event horizon's cage.

Empowered W: Perfect Dark matter: Veigar summons a meteor coverted in dark magic after a brief delay dealing aoe magic damage and slowing every target hit by 20/30/40/50/60% for 2/2.15/2.3/2.45/2.6 seconds.

R: Primordial Burst: Veigar blasts a target dealing magic damage which is increased depending on the victim's missing health.

R passive: Master of evil: Veigar reduces the cooldown of his abilities by 1/2/3 seconds and gains 5/10/15 movement speed for 1 second whenever he lands baleful strike.

I just put what would be fun for me mobility, feeling rewarded for landing abilities/trapping people in the cage which is veigar's thing, and a built in reward for kiting as well and the farming thing is there and improved if you use what you gained to kill people with your ult I really like that idea but it would be busted as fuck