PASSIVE - DOOM: Periodically, Vex gains Doom, which empowers her next basic ability to knock down affected enemies and cause them to flee from her 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).
Doom's cooldown resets upon respawning. If Looming Darkness triggers Doom, all targets will flee from the center of its area of effect instead.

INNATE - GLOOM: Nearby enemy champions that dash or blink, as well as targets hit by Looming Darkness, will be marked with Gloom for 6 seconds. Vex's next basic attack, which becomes non-projectile, Mistral Bolt, or Personal Space against a marked target will consume the mark to deal 30 − 180 (based on level) (+ 25% AP) bonus magic damage and refund 25% of Doom's cooldown.

Against marked non-champions, Gloom deals 40 / 45 / 50 / 55 / 60% (based on level) damage and refunds 10% of Doom's cooldown.

MY NOTES: Her passive fear Doom 'n Gloom is essentially the biggest factor to play around in her kit so it's important to understand this. When the bar is full you will be charged and the next time you use an ability Q Mistral Bolt, W Personal Space, and E Looming Darkness on the enemy then they will get feared, this part of the passive is called DOOM. The next is Gloom where if an enemy dashes, blinks, or gets hit by E Looming Darkness then they will get marked with Gloom for 6 seconds. This means when you do damage to them with auto attacks or spells they will take extra magic damage AND it reduces your fear cooldown (Doom) by 25%. This means the more they dash the more often you will have fear up and the more damage they will take!

ACTIVE: Vex unleashes a wave of mist in the target direction, dealing magic damage to enemies it passes through and accelerating in speed though reducing in width after travelling 500 units.

MY NOTES: This ability is a bit weird with how it works. So, it starts off wide and slow then it gets smaller but MUCH faster. You'll learn the different angles and ways to use it to hit your enemies better or catch them off guard through experience. The damage is great, the cooldown is EXTREMELY low reaching as low as 3 seconds, and its cast time is short. There isn't much you have to know about it other than it's your primary range damage ability, but it will be important to use for combos with your kit. The best tip I can give for this ability is that it's a great poke and face-checking tool. You can snipe people from the fog of war with it if they aren't too careful!

ACTIVE: Vex emits a shockwave around her before the cast time, gaining a shield for 2.5 seconds and dealing magic damage to all nearby enemies.

MY NOTES: Personal Space has multiple uses and most of the time it'll be in combination with your fear passive Gloom n' Doom. If you're playing against a melee champion like Yasuo, Talon, Qiyana, etc… You can use your W Personal Space when fear is up to instantly fear them then follow it up with your E Looming Darkness then Q Mistral Bolt. If you're about to get poked or get all-in'd by the enemy you can simply use your W Personal Space as a shield to block the damage or mitigate it as much as possible. Lastly, in teamfights you can have very reliable and easy multiple champions feared by combining it with Gloom n' Doom so look for opportunities to do that as well! A cool way to do it is to use your ultimate Shadow Surge when your fear is up so you can close the gap then use W Personal Space as the fear is ready this is great for solo all-ins or for getting those multi-champion fears!

ACTIVE: Vex commands Shadow to fly to the target location, increasing the radius of the area as it travels. Upon arrival, Shadow deals magic damage to all nearby enemies and slows them for 2 seconds.

Looming Darkness will cast at max range if cast beyond it.

MY NOTES: Looming Darkness is a great setup tool for combos and trades when you combine it with fear from your passive Gloom n' Doom. It's long range and when you hit and fear them you can immediately follow it up with the rest of your kit! You can use a simple Mistral Bolt or walk up close and use Personal Space then Mistral Bolt or do a full all-in combine by following it up with Shadow Surge! Remember, the further you throw Looming Darkness the longer it takes to hit them so it's preferred to use it up close if you can since it'll be a lot more reliable to hit and be almost instant!

ACTIVE: Vex commands Shadow to launch itself in the target direction, granting sight of the area along its path for 0.4 seconds each and dealing magic damage to all enemies hit.

Shadow stops upon colliding with an enemy champion, marking them for 4 seconds and revealing them for the duration. Shadow Surge can be recast while the target is marked.

RECAST: Vex commands Shadow to pull her towards the marked target with displacement immunity, upon arrival consuming the mark and dealing them magic damage.

If the marked target dies within 6 seconds of being hit by Shadow Surge, Vex can cast Shadow Surge again at no additional cost for the next 12 seconds after 0.5 seconds.

MY NOTES: This is one of the longest range initiation ultimates in the game. It has two casts, the first is to shoot Shadow out and then second cast is if you hit the first cast then you can fly over to them and ruin their day! The hitbox is fairly big so just make sure you have a clear shot when you want to use it. This ability goes through minions so don't worry about minions blocking it! I try to use this from the fog of war whenever possible because people usually don't react in time. You want to use your ultimate when you're ready to win an all-in or you're looking to initiate a fight whether it's a gank/dive in the botlane or a full on teamfight at dragon!