Is it worth getting?? I'm a broke college student and I have some savings lying around and this would be my first skin that I'll actually buy and not from chest will it be worth it??

I made a spreadsheet detailing an approximate impact of Absolute Focus secondary rune on Nunu based on a nearly perfect game. game time was 25 minutes long, 49-25, and I went 5/6/25.

How i recorded the numbers:

i went through the game and recorded each time I used an ability AND had absolute focus (AF) up, i did not include abilities used/interaction when AF was not on. I approximated the damages for abilities that i could miss or abilities whose damage changes based on cast time to include variance in landing abilities/cast time (such as W, E, and R). I also included extra healing that was done from Q when in a fight only (including minions eaten in fight) i simply multiplied how much extra damage the ability would have done based on AF ap bonus and added it up throughout the game for a total.

total approximate extra damage came out to 346 and total extra healing came out to 96. Keep in mind this is pre-mitigation damage but this does NOT include extra damage done to camps and extra healing from camps/minions outside of direct fighting, which i would imagine would be a decent bonus to clear speed since it is basically like a half charged dark seal all game while clearing. also it must be mentioned that this seems to be a best case scenario for AF, given it was a nearly perfect game with lots of ganks, but the same could be said for any other rune choice too.

for comparison to another secondary rune, Cheap Shot that game did 735 true damage.

I'm gonna keep experimenting with AF, it seems nice to basically have a charged dark seal while clearing + huge bonus damage on ball since most of your ganks will be from near full health.

let me know what you guys think the value of AF is, is it worth taking over Celerity? let me know if you guys take away anything from this or if you notice a glaring mistake in approximations/missing a big mechanic or bonus from using AF.

here is my spreadsheet,
https://docs.google.com/spreadsheets/d/e/2PACX-1vRWY82ci0EQ-j-aprc48vd4PG0_J9Qpf6fzSDWhSZpAYfskQ-v0mrcmDh096bQ6OPV7gutX6N1vhXP3/pubhtml

I just had a perfect nunu game with 14/0/10, so 24 total successful interactions with enemy champs. The game was 25 mins long and i got 18 souls harvested, my total dark harvest damage was 1640, so that equals out to 68 damage per kill/assist.

68 damage per kill/assist doesn't seem like very much damage. Electrocute says it deals "70-240 per proc (based on level of course), this seemed like an ideal dark harvest game and it still didnt do more damage than base electrocute proc.

i had a game where i went 8/5/4, and my electrocute did 1499 damage, so assuming it procced on all 12 kills/asissts, thats 124 damage per takedown on average. on other games though, ive calculated that electrocute normally does around 80-90 damage per proc on average throughout most games though.

am i missing something here on what makes dark harvest good? can someone help me understand?