Remind me again why the hell %HP TRUE damage exists

Unless I'm missing someone, aren't there only two champions who have it in the first place? Fiora has to hit your vitals and Vayne has to land 3 autoattacks in a row to proc her damage. There's counterplay to both of those champions and abilities, it's really not that big an issue.

It exists to allow for characters who are excellent anti-tank champions while not needing to give them absurd power vs. squishy targets. The problem with armor penetration or simply high enough damage to break through defenses is that both of these still greatly impact squishy targets. Percentile true damage, however, can be tuned to deal meaningful damage to high-defense targets while leaving squishy targets much safer.

In short, it's a valuable balancing lever that many people vastly overestimate the actual strength of.

%HP true damage is generally very slow at killing compared to actual straight damage. It does well against tanks, not so well against squishies.

The counter is to just kill the target using it, as you can build more offensive to deal with it (or in vaynes case, can even reduce her attack speed)

because tanks exists. tha's your answer

Because it is slow to stack and can actually be counted by attack speed slow items.

Also mix damage like kog or Kai'Sa is MUCH MUCH harder to counter since the champions with do it consistently.

Like Kai'Sa can kill a tank much faster then a vayne since she has more mixed damage where vayne is mostly physical. Do I have to remind you EVERY meta kog is good in he just instantly kills tanks.

Seriously fiora is the only champ that has this mechanic that is closed to balanced.. which is a joke to say. Urgots Ult and vaynes W both need changed asap. Vayne with the perma invisibility buff that riot forgot to revert leaves her 3 shotting EVERYONE not just as a "tank slayer". Both of these champs needs changed where vayne deals bonus ad damage every third hit or can even have armor shred like which would still imply that she is used to go through tanks with her high mobility, invisibility and condemn. Urgot however needs his ult to be totally changed. I don't know how many times I need to say it but a tank should tank. Not r someone just to flash e them and 1 hit them with an r that deals 600 true damage to anyone?