Everyone has a plan until they get punched in the mouth...and that punch is Vayne lethality in MID.

Let me introduce myself, they are I TEACH YOU TO LIVE.
I've been playing League since it came out in Europe and Vayne is my favorite champion.
Once it was much stronger, or rather, there was no need to use it super well to make a difference, there were no champions who pierced walls, who jumped walls, who with their R entered you and made you explode, nor samples who stole R or various abilities.

Now we do, and either we update and keep up with the times or we stay behind.
Vayne has never undergone a rework (like Talon, Graves, Pantheon, etc ...) but over time her build has changed.
Now to perform with this sample you need to know how to use it well because now you can no longer make mistakes.
Do you miss a somersault?
You are dead.
Are you wrong to nail your enemy to the wall?
You are dead.
Can't optimize the invisibility of the R?
You are dead.

1) People can't play lethal vayne MID
2) The lethality makes it strong already in the early game
3) You can easily punish your opponent
4) In late with three shots you blow up anyone who is not a tank.
5) It's fun

Benefits of vayne lethality in MID

Strong in early

People can't play against it

Strong late game

Disadvantages of vayne lethality in MID

Very difficult to use well

Squishy

There are better midlaners

Vayne cannot fight against assassins, for example Zed and Akali.
It is necessary to optimize the ability to dodge enemy clothes with the Q, not wasting it and keeping it more for defense than for attack.
Punish every mistake of the enemy.
Nail to the wall with the W.
Once you close the first object you will face with me lethality does so much, very much harm, in articulate to bruisers and wizards.
It is a more aggressive vayne than the classic game in bot, this is because even in the trade in eraly game lethality comes into operation doing a lot of harm.
Get the jugnler's help for a couple of ganks, and once you gain some advantage, keeping it won't be too difficult.

COURAGEOUS IS THE ONE WHO KNOWS EVERYTHING AND DOES NOT FEAR ANYTHING