Vex

Passive - Doom: Periodically, Vex empowers her next basic ability to knock down and fear enemies hit for 0.75/1/1.25/1.5 (based on level) seconds, during which they are slowed by 60% – 99% (based on distance from Vex). If Looming Darkness triggers Doom, enemies hit will flee from the epicenter instead.
Doom's cooldown resets upon respawning.

Innate - Gloom: Nearby enemy champions and monsters that dash or blink will be marked with Gloom for 6 seconds. Vex's next basic attack, which becomes non-projectile, or basic ability hit against an enemy with Gloom will detonate the mark. Looming Darkness will also inflict Gloom, but cannot detonate it.

Gloom's detonation deals 40 – 162.94 (based on level) (+ 25% AP) bonus magic damage and refunds 25% of Doom's cooldown. Against non-champions, this instead deals 40% / 45% / 50% / 55% / 60% (based on level) damage and refunds 10% of Doom's cooldown.

Active: Vex launches a wave of mist in the target direction that deals magic damage to enemies hit. After travelling 500 units, the wave accelerates but also narrows itself.

Active: Vex emits a deafening scream around her before the cast time, dealing magic damage to nearby enemies and granting herself a shield for 2.5 seconds.

The scream's radius is slightly increased against enemies that are dashing.

Active: Vex tosses her Shadow to explode at the target location, dealing magic damage to enemies hit and slowing them for 2 seconds. The explosion's radius increases based on cast distance.

Killing an enemy with Looming Darkness refunds 10% of Doom's cooldown, increased to 25% for champion kills.

Active: Vex sends her Shadow in the target direction, which grants sight around its trajectory and deals magic damage to enemies hit.

Shadow stops upon hitting an enemy champion to mark them for 4 seconds, during which they are revealed. Shadow Surge can be recast while the target is marked.

Recast: Vex dashes towards the marked target with displacement immunity. Upon arrival, she consumes their mark and deals magic damage.

If Vex scores a takedown against Shadow Surge's marked target within 8 seconds of its application, Vex can cast Shadow Surge again within 12 seconds at no cost after 0.5 seconds, repeating the effects.