Hi mobafire community!
This is my first build so go easy with me
please suggest,comment and rate!

Pros

uses no mana
pretty tanky
easy harassment
good jungle movement with slice and dice
cool play style
Chuck Norris late game

Cons

Vulnerable to cc effects(stuns for example)
squishy early game
expensive item build
expensive champion(6300)

Tank(er):champion or build that is able to take damage and let other champions attack
CC:crowd control ,stuns,snares,slows,etc
CDR:cooldown reduction
Armor pen.:Armor penetration
DPS: damage per second
DPS champion:like master yi,a champion that kill fast,usually with AA
AA:auto atack
Farming:killing waves of minions to farm money and XP
XP:experience

Let's start with runes
get 9x Greater Mark of Desolation for armor pen, decisive for renekton
9x Greater Seal of Defense for survivability
9x Greater Glyph of Scaling Magic Resist against heavy casters
and 3x Greater Quintessence of Desolationfor armor pen

if you prefer,get 9x Greater Mark of Scaling Attack Damage instead of desolation mark

Why do not use CDR runes?
because if you make the core item build,the items + masteries
gives a 40% CDR(maximum)
so getting CDR runes in this build is a waste of runes space

I go 21/6/1because of the summoner spells( Ghost and Exhaust) and because Renekton really needs offense

I get Exhaust and Ghost because they are very flexible spells,that u can use it to chase or run away

but if u like you can get Cleanse,because,as I wrote,renekton is very vulnerable to cc effects
or you can pick Flash if you like it more than ghost

Why do not use other spells?

Clarity:renekton does not use mana
Clairvoyance:let a jungler get this spell
Heal useless after lvl9
Teleport nice spell,but you can pick something better
Rally simply useless
Fortify Let a support champion get this spell
Ignite good but not good as exhaust,and if u pick it instead of ghost,ya wont have many options to run away
Revive could be good if it didn't had 8 min cooldown
Smite this is not a jungling build
Promote it doesn't exist anymore

Passive

: Reign of Anger-Renekton gains 5 Fury per autoattack. Having sufficient fury empowers Renekton's abilities with bonus effects, but this drains Fury. Out of combat, Renekton loses 5 Fury per second.

Q

: Cull the Meek-Renekton swing his blade, dealing damage to nearby enemies and healing for a portion of the life dealt. Fury Bonus: Heal amount raised dramatically.
This is a very good skill,specially early game,because it heals and deals a good damage,maximize this first

W

: Ruthless Predator-Renekton's next attack swings twice, dealing a portion of his weapon damage, stunning his target briefly and applying on-hits each time. Fury Bonus: Renekton's next attack swings three times, dealing a huge portion of his weapon damage, stunning his target greatly and applying on-hits each time.
This is renekton's bread and butter mid/late game,because Cull the Meek will not be so effective as it was early game.Maximize this second

E

: Slice and Dice-Renekton dashes forward, dealing physical damage to targets along the way. If he hits a target, he can use Dice for a brief period of time for the same effect. Dice Fury Bonus: Renekton deals 50% increased damage and reduces the armor of units hit.
This is a great skill,but just get 1 lvl of this at level 2,just for the effect,because it doesn't worth leveling it up,just get it for the rush.

R

: Dominus-Renekton empowers himself with dark energy, gaining size and bonus health. He deals periodic damage to enemies around him and rapidly gains Fury.
lvl this up always that possible,it's a very nice ulti,and it stacks with your Sunfire Aegis(TA DA),in other words, 100 magic damage per second just standing by the enemy,use this to run away too,because of the bonus health

Core items

Ionian Boots of Lucidity
The Brutalizer
Spirit Visage
Last Whisper
Sunfire Aegis

Optionals

Sword of the Occult if you're being a killing machine
Bloodthirster if the game did not ended yet!
Force of Nature if you're having trouble surviving
Guardian Angel if they are ganking you a lot

Situational items

Banshee's Veil if opponent team uses a lot of CC
Thornmail if they have a master yi,or someone DPS like him,get this instead of force of nature or spirit visage
Hexdrinker to save you against that pesky ryze!Or another heavy caster


some people say that Spirit Visage is useless, but it stacks with cull the meek

******** FURBER'S SUGGESTION ********
If you got about 3/0 5/0 early game, get sword of the occult after boots.

Early Game

Go bottom or top lane,with a support champion like Zilean/ Soraka/ Sona if possible
try harassing enemy champions with your Cull the Meek,and farming with it.
DO NOT TURRET DIVE UNTIL LVL 6
At level 2 get Slice and Dice,and try to do this:slice to an enemy champion,and (hit him!because if slice doesn't hit anyone,you won't be able to use dice)use Cull the Meek,and then dice back away from the turret
at lvl 3 get Ruthless Predator,and do this combo(away from turrets)
1:Slice into the enemy;
2:use Ruthless Predator to stun him;
3:Strike him with Cull the Meek;
4:Dice again in him if he tries to run away and repeat steps 2 and 3 if needed;or,if it didn't worked and you're being chased,dice far away to escape

try to get a first blood with this

When you get you ulti,just do the same combo,but insert it between steps 1 and 2

then

1:Slice into the enemy;
2:Activate Dominus
3:use Ruthless Predator to stun him;
4:Strike him with Cull the Meek;
5:Dice again in him if he tries to run away and repeat steps 2 and 3 if needed;or,if it didn't worked and you're being chased,dice far away to escape
Here's a video explaining this Play Video
Youtube is lagging and I could not post this video,so watch the champion spotlight,I got this cut from it Play Video

Mid Game

Once you have Dominus lvl 2,and at least Spirit Visage,try ganking in other lanes,
ask if mid needs help,in other words,kill a lot,you are going to need money for Last Whisper and Sunfire Aegis
As you're going to go by the jungle to gank,slice and dice can be used to pass through walls,but not all of them
This is a video showing where renekton can and can not pass Play Video This is a cut from champion spotlight,so ignore the build that appears

Youtube is lagging and I could not post this video,so watch the champion spotlight,I got this cut from it Play Video

Late Game

Help pushing lanes principally, and in team fights,try to stay in the middle of the battle ,this way you hit everyone with your Sunfire Aegis and your Dominus,and you can use Cull the Meek,hitting everyone and restoring your health. if you be seriously wounded,slice and dice away from the fight
Game Time:17 minutes

sometimes I try something different,and here are the best builds beside this one that I've made
DubCore(poster of the build the sand between you toes)commented that this builds are ****py.
But with my ****py builds I killed more than him!these builds are just ideas,they're not perfect

So that's my build,it's not finished yet,i'm going to add photos,videos,and make it better
thanks to Phreak for making the champion spotlight
feel free to comment or suggest!
please rate +!!