Armor Pen items could use some love
Last Whisper is in a fine spot right now, but I find Ghostblade and Black Cleaver a tad underwhelming at different stages of the game. Ghostblade has very low flat AD, I think it should get bumped up to 50 AD (you can increase the price accordingly, the stats just feel so weak without the active). Black Cleaver costs so much money, I think the flat Arm Pen should be raised to 20 so if feels like a more impactful buy in the mid game.
Particularly Ghostblade feels so weak without the active. It would be nice if some kind of upgrade were available in the late game to make it more slot efficient.