Leave Black Cleaver to tanky bruisers/juggernauts
I think
got enough armpen/lethality toys now. They shred armor even better than current 60% armpen
.
Seriously this item is originally supposed to be bruiser choice against early season 5 cindehulk tanks. Remember it? 400 HP, 40 dmg and 3000 cost.
I suggest you to make it scale from max HP. For example 1.7% dmg.
Reduce total cost from 3100 to 2800. Yeah this would be unreliable for Riven-Jayce etc etc. (+34 dmg at 2000 HP.)
Please don't hate me but I'm sick to see this item as a core for glasscannons.
was never "intended" for Bruisers.
It was meant for AD casters, champions that deal physical damage primarily via their spells.
and
. I don't understand why you are so amazed by what it used to be. Would it bear a huge meaning if we swapped the names of Infinity Edge and Rabadon's Deathcap?
No. So why do you care about the fact an item was reworked and is now completely different than what it used to be, if they created new items in his previous niche to compensate?

killing everything while hardly dieing themselfs.
+
and 400 healh 40 ad.
