Talk:Nasus/@comment-9775822-20150529030425/@comment-5955640-20150529033639

Umm. It depends really. If you bought or have a pen I would say 50 maybe a 100 to a 150. If you don't have pen it might be a bit more.

The best way to do this is to get the average health of a marksman post laning phase but not late game. Look at the average armor of a marksman around the same time and then calculate how much armor is mitigated by a test run of you farming up to a time period in a live match (do two to three matches and look at the average of that as well, lots of averages I know) without buying penetration. That's important.

After you get that data sorted you figure out much more damage you do with penetration based on the average number of stacks against the enemies health bar.

Assuming you meant Marksmen. If we add mages and assassins to this list it will be a lot harder to do this.