Talk:Kennen/@comment-195.70.52.200-20110212092105

After thorough testing, I think that Lightning Rush speed boost actually equals his base ms - Kennen's 310 + any boots.

First test: without any items. Movespeed = 310, when LR-ed, 540. This looks like +230, but that doesn't take diminishing returns (see Movement page)into account. If we do, then 540 = 415 + 60 (this is 75*0,8) + x*0,5; this gives x as 65. This means the actual movespeed is 415+75+130 which equals 620 - exactly the double of 310. Second test: With boots of Speed. Movespeed = 360, when LR-ed, 590. This made me sure the bonus isn't +230, the diminishing returns would've cut off more than without boots. After the same math, actual movespeed came out as 720, that is still exactly the double of 360. For the third test, I bought a Zeal but sold the boots. That is a 8% increase in movespeed over the 310 - 334.8. LoL rounded that to 335, but I kept working with 334.8. Before activating LR, I predicted the movespeed - now certain LR doubles MS - to be 564.8 (still 230 more than 334.8, I can see how that seemed right) - probably 565 after rounding - but it was 552. The diminishing return formula worked right even with very large numbers - I've tested that with Yi Highlander+Ghost+Quickness mastery+a few Phantom Dancers. That meant LR doesn't simply double MS - then I've tried calculating it a few ways, when I tried only doubling base MS and adding it after Zeal was factored in - that is +310 at the end of the calculation (334.8), that is 640.8, when I diminishreturned that, I got the 552 I needed. Fourth test: Boots of mob, a phantom dancer and ghost, just for testing: It worked. LR doubles your base MS, but it's added after any multiplicative bonuses.