A bit about myself:

My Summoner name is 'Ferujjin'.
This is my first guide.
Renekton is one of my favorite champs along with Garen, Twisted Fate and Trundle.
I have been using this build for a pretty long time, but i have only just recently decided to add it to Mobafire after receiving multible compliment on it
SO thanks for reading my guide, rate and tell me what you think :)
-Kid Cajun.

Ghost:

Good escape tool, good pursueing tool, good positioning tool. Just an all-around great spell.

Exhuast:

good for stopping dieing champs escape your merciless clutches, or to stop champs (n the rare occasion) to kill you when you have lost too much health.
Could be used well in conjunction with Ruthless Predator to help you (or your laning partner) First Blood.

Ignite:

*sigh* ignite, the most annoying (and loveable) spells in your arsennal. Great for securing first blood, although, while this spell is good it restricts you from your Ghost/Exhuast combonation, so only get it if you are against a team that didnt require Ghost and/or Exhuast to fight evectivly.

Heal:

sure, i dont restrict this spell, but this build mainly focuses on damage out put, so i suggest Ghost, Exhuast or even ignite before this spell.

Flash:

Like Ghost, it is a good escape, position and pursuit spell.
While this is good, I still prefer Ghost.