Hello, this build is for all you lots playing Renekton.
When you Play him for the 1st time you might think he can handle a punch. WRONG!
Early game renekton is squishy and to Own with him you gotta use slice and dice to manoevre around the fight using it 1 time then using youre Q and then again going to a safe spot with E.

Well i got these runes but i think a good alternative is a full flat rune page attack damage.
What i got 4 runes is my choice but feel free to experiment.

Well my mastery build is almost full Offense with a little armor dodge chance and magic resist. I prefer this page but you can also go 4 full tank. on the other hand renekton isnt a realy good tank and in my experience Off. Tank doesn't work that great either( compared wiht nasus/ Jarvan).

Well 4 ranked i used this build and mastery page and owned. feel free to look in my match history. But as the only guy with a great score you can't carry youre team to the end which means i got a lost. :(

The Dorans blade is great 4 early game dmg life steal and survivalbility. I can also recommend Dorans shield. Lvl 1 boots you need in early game but you can leave them without upgrade thanks to youre E power( Slice and Dice) After that i buy vampiric scepter just for a little more survivalbilty. Well if you got enough money i will strongly recommend buying BF sword but if you dont go 4 Berserker Greaves ore Phage, upgrade Phage to Frozen mallet and you got youre items to win the game. Although Atma's Impaler wil alos give you that extra dmg crit chance and armour you need in teamfights

Well to just get it all together. Renekton excels at Early game with a good buddy who can Stun/Slow/Throw. But beaware for not going into head to head combat because if you wanna win you gotta keep moving. In mid game renekton will do great dmg with his Bloodthirster but beaware until late game youre still pretty easy to kil. Late game you should now buy some Tanky items because his dmg output sucks late game and you need some more survival items.
I hope you enjoyed this build and i think you will Kill a lot of champions with this build!
Goodluck!