Ok, and remember you don't have to build straight to youmuu's, you could just get brutalizer for the CDR and complete youmuu's later. CDR is just so valuable for him he needs it early.

thanks for the advice, ill try taking out last whisper and putting in a tankier item instead and build my youmuu's a bit earlier, and fix up my masteries i just rushed them.

If you are taking the dodge masteries I would suggest getting Greater Seal of Evasion rather than armor to compliment them. You put a mastery point in mender's faith, when you don't have the Heal summoner spell. Put the 1 point from the magic pen mastery into Lethality, Renekton gains virtually nothing from magic pen, the only magic damage he does is his ult.

Starting with Doran's blade is risky, you need to auto-attack to gain use from the lifesteal and therefore push your lane up and make you more vulnerable, I think a Doran's shield would benefit you much more. You get your Youmuu's REALLY late, and you are missing out on some very much needed CDR. At least build The Brutalizer earlier in the build.

Your title says offtank, but the only real tank item you have is Randuins. I would suggest replacing Last Whisper with say, Force of Nature, or another MR item. He's much too squishy as he is to offtank.

there was like one point in it :L woopty doo. But i changed it :P

magic resist ..

whats MR o_o

MR is not optional

Comment if you Like this build but please try it out before commenting.