Veigar

Innate: Veigar generates a stack of Phenomenal Evil for each enemy champion hit by his abilities, and 5 stacks whenever he scores an enemy champion takedown.

Phenomenal Evil: For each stack, Veigar gains 1 ability power.

Active: Veigar blasts a dark bolt in the target direction that deals magic damage to the first two enemies hit.

If this kills an enemy, it generates 1 stack of Phenomenal Evil Power, tripled against large minions and monsters.

Active: Veigar casts down a mass of dark matter that strikes the target location after a 1.2 delay, dealing magic damage to enemies hit.

Dark Matter's cooldown is reduced based on stacks of Phenomenal Evil Power.

Active: Veigar forms a cage at the target location that erects after a 0.5 second delay, remaining there for 3 seconds. Enemies that collide with the edges of the cage are knockdown and stun for a duration.

Event Horizon can affect enemies only once per cast.

Active: Veigar sends a primordial burst at the target enemy champion that deals magic damage, increased by type=target's missing health%.