Originally Posted by
StrawberryZebra
Renekton is your friend here. He's got high enough damage to kill tanks early game, but is tanky enough himself not to be instagibbed by carry laners. Melee assassins, even if they're planning on building tank, are in serious trouble anytime they're close to him, you can expect to remove anything from a third to a half of their health with an empowered W early game. He's also one of the few people that even Riven with Ignite is worried about, with good reason. With a little care, you can keep her in check early game without any major issues at worst, or repeatedly murder her if she starts getting too aggressive.
I know people always being up that his late game damage drops off, and its true, it does. However the drop isn't anything like as extreme as people make it out to be, and if you had an okay time in lane you should almost certainly be doing enough damage to be relevant come late game. Its worth pointing out that he will get to late game, where the wannabe Tank you've been rolling in lane probably won't.
Finally, you've also got plenty of build options on him at the moment. He's got great damage options with Hydra and Black Cleaver, makes great use of a Sunfire Cape and Steraks with your ult up gives you a huge shield. You can build more or less whatever stats you need and it'll work out just fine - that includes getting a Zz Top Portal and a Banner of Command and pushing your way to victory.
If Renekton isn't your thing, you can always go for Trundle instead. Again he's got enough damage to kill tanks, especially with Fervor of Battle, and is far too tanky for assassins and carries to handle. He does have issues in the mobilty department however, but he'll beat the crap out of anyone who has to get close to him and that includes being able to just stand his ground when Riven does her thing and come out on top. With all the tanks running around at the moment his Ult is a great asset to your team too.