I just came back from a 3 to 4 month break and...

ALL HAIL WALL OF TEXT.

(work on your formatting, that is an eyesore to read.)

Xayah, Trist, Twitch, Kog, and Kalista are TOP tier champions

Either, Xayah and Kalista are banned during Worlds.

Black Cleaver changes were to make it as close as possible to the version pre- tank update. For a typical tank like building , the old version would reduce her effective health against physical damage to about 80% of its normal value, while the new version reduces it to 83%. Those numbers are very close.

Relevant maths:

collectively grant 20 additional armor, 5 additional MR, and lose 200 health from their old versions. A level 11 Poppy currently gets 2630 from her base and these items, and previously would have gotten 2830. She currently gets (9 from runes + 60 Base + 60 + 60) x 1.15 from W passive = 217 armor from these items, and previously would have gotten 194 Armor.

24% shred on 217 = 165 Armor 30% shred on 194 = 136 Armor

3.17 x 2630 = 8337 effective health against physical 2.94 x 2830 = 8320 effective health

2.65 x 2630 = 6970 effective health 2.36 x 2830 = 6675 effective health

Current effective physical health against black cleaver: 83.6% Previous effective physical health against black cleaver: 80.2%

The values of items become very difficult to evaluate outside of the vacuum of the item itself, and the current black cleaver becomes more effective against armor stacking than the previous one, as tank items were changed at the same time, granting more resistances but drastically less health. was given strictly less health with no armor increase, and was introduced, granting no health boost when its active is on cooldown. I gave the example I did because it involves core tank items from both before and after the update. Against anyone building Randuan's or Stoneplate, though, the current iterations of all three items make Cleaver strictly more effective at its job even though its numbers are lower in a vacuum.

I say all this from experiences as a tank dealing with black cleaver rushers in the top lane for the entirety of my year since I started playing -- The new version of Black Cleaver essentially forces me to give up my lane or rush damage items instead of being able to tank through it since my health is so much lower than before 7.9.