Honestly, black cleaver just needs to be deleted
it was clearly remade to be a bruiser item but it's almost never been a problem on bruisers, but it has been on every other ad class. Clearly the stats don't matter, %armor shred is an ancient and outdated concept and through all of these AD caster armor pen and lethality ADC builds, black cleaver was the one constant. Now you're seeing it again with botrk/bc combos. It synergizes with anything AD and I just can't see it being balanced now when it was changed back to its recipe for bruisers to discourage adcs from building it and yet adcs still don't care. I'm frustrated with that as a fighter player but I'm not sure if %armor shred can be reasonably balanced anymore. Not with all the tank busting items readily available.