Talk:Last Whisper/@comment-26578323-20150706084318

tbh, I don't really get why they calculated the additional imaginary AD you would earn by buying last whisper (in regard to the increase in damage), as you would then have to multiply with 100 / (100 + enemy armor) to know the exact additional HP you 're going to chunk off of the enemy. I have just created a formula that gives the additional HP you chunk off by having 39% Armor Pen. (than you would if you had 0% Armor Pen). The formula is this: 39*x*y / (0.61*x^2 + 161x + 10000), where x is the enemy's armor and y is your total AD. While this may not really interest most of you guys, a couple of things come out of this formula that are certainly going to. First, the general idea that last whisper gains more value the more armor the enemy has is wrong. To be exact, this formula gives a maximum of about 12,295% of your total AD as additional HP "chunking" (with say a non-critical basic attack), which is achieved at 128 enemy's armor. Above that 128, the additional chunking falls. Secondly, while 12.295% of your AD is achieved at 128 armor, 10% of your AD is achieved at 50 armor! So basically, if you have 100 AD, 39% Arm.Pen. and your enemy has 128 armor, every normal basic attack chunks 12.295 more HP off of them. If you have 200 AD, then 24.59 HP. 400 AD, 49.18 HP. Off course, if it's a critical, the additional HP chunking is multiplied too (by 2 or 2.5 if you have IE).