tank renkek is the ****!

Hey Ruin Sage, Thanks for the tips :] I'll take all that into consideration next time i edit the guide

The actual build is sound, but the guide needs a lot of work.
First and foremost, the Shift Key. I see you capitalize only 2-3 things all guide and that really bothers some readers.
Also- Spelling and Grammar make a huge difference.
Your Pros/Cons section should be close to the top; it is there for getting an early feel of what this character with this build can/can't do.
Cons of Renekton: He is melee, so he has to sacrifice Damage for Survivability. He is CD based, so a Silence can really mess him up. That's about it!
You totally ignore the fact that Dice, when empowered, removes 25% of the enemy's armor. This is sometimes more useful than extra damage and heal on CtM.
You should rather take Red Buff than Blue Buff and leave it for someone on your team who needs it like Swain, Singed, or Karth, for example.
You should explain why you don't upgrade the Brutalizer.

That is my opinion. Make some improvements or tell my why I'm wrong and I'll upvote. As I said, the build itself is strong.

Nice overall guide but what i would do is to put ur atmogs (Warmogs and atmas) earlier.

Nice guide. I would finish the brutalizer into the ghost blade though. He benefits from all the stats and and the active plus his ult are terrifying! Love Rek! When you get a chance, give him some Dominion love as well. He has proved very viable as an attacker as well as defender.