i am writing about Riven. Riven has no mana or other resources that could prevent Riven to use her abilities. So its all about CDR. I have noticed that pure damage and lifesteal are more useful for Riven in survival than CDR. Yes CDR helps at running away and stuff, but if you got dodge and lots of lifesteal, in late game you don't have to run away anymore. I am NOT using crit chance, because over half of riven damage comes from his abilities and crit is not useful in the same way as armor pen. and damage. This is my first guide ever made about LoL

If there is magic user in your lane or entire enemy team uses ability power, you have to buy "hex drinker" instead of brutalizer. Dodge is for survival and it's very useful, for example there comes Tryndamere who has 90% crit chance and infinity edge, and he's attacking you. 20% dodge avoids every fifth basic attack, so instead he hits you with 5000 in 5 seconds, it hits 4000 in 5 seconds. compared to armor its more useful and saves item slots.

i chose 0-9-21 because it gives more advantage than 21-9-0

Armor pen. is important is very effective and useful. Dodge is for survival and CDRs are good too

Your fighting rotation 1v1: slash, attack, slash, stun, attack, jump slash, ignite, ulti
(You can activate your ultimate at the beginning so you get more attack damage, and then in the end use it)