Early Game Items
You want to buy Doran's Blade(s) when you are trying to snowball off of early game ganks. Starting with a Doran's Blade while starting Red Buff gives you one of the strongest level two ganks in the entire game. Never buy more than 3 Doran's Blades because they will hurt you later on.
Your starting item, if you want to go Wriggle's Lantern, should be either Cloth Armor +
or Vampiric Scepter. Boots +
is also a good option. Long Sword however, should not be your starting item under any circumstance.
This item has great synergy with your Ruthless Predator
. You don't need this for the sustain in the jungle, but it gives amazing dragon and Baron control. The difference between Doran's Blade(s) and Wriggles Lantern is the difference between better farming and better ganks, and both are completely viable.
Mid Game Items
Aegis is best when you are going to be the primary tank on the team, it gives an awesome aura, is cheap, and makes you very tanky early on. If you really want to win, ensure that you have one of these on your team!
This item used to be one of the best items you could build. It had insane synergy with Renekton, giving him absolutely everything he wants in an item. Now, this is an item for Olaf and maybe Volibear and no one else as the stats went from very efficient to completely inefficient. Not worth buying on Renekton unless the opposing team is VERY AD heavy.
I have mixed feelings about The Brutalizer. It gives a great increase in jungle speed and damage, but its upgrade is somewhat weak because it gives absolutely no defensive stats. The Brutalizer is good if you are trying to snowball really hard early on, but it is not the greatest item if you can't.
This item is great against AP heavy teams, it gives health, CDR, Magic Resistance, and its passive is great in conjunction with Cull the Meek
. Late in the game just sell it and replace it as it becomes outclassed as the game drags on.
Another great item against AP heavy teams, it makes Renekton deceptively tanky with the magic damage shield it gives. Combined with Spirit Visage, Hexdrinker makes Renekton an AP killing and tanking god.
If you want to focus on farming and you plan on buying a Randuin's Omen later in the game, this is a great choice to prepare for late game. Powerful even if you don't buy Randuin's, but not as strong.
This is another item that you probably want to be buying and upgrading into Frozen Mallet every single game. With a little luck, it makes your ganks even stronger. Renekton can have a major problem sticking to targets once his abilities are on cooldown, so a Phage can be the perfect bandage until it can be upgraded into Frozen Mallet.
End Game Items
Frozen Mallet gives you a huge health pool, and makes you stick to targets like cement. This item is super strong on Renekton.
Force of Nature helps you stick to targets, and helps ward off AP heavy teams. A reasonable replacement for Spirit Visage late in the game.
This item is much better on a Renekton who is not buying many pure tank items such as Force of Nature and Randuin's. Gives great mixed defensive stats with an incredible passive.
This is the pure damage item Renekton is looking for if he needs one. This item gives you the potential for huge burst damage, and makes an excellent 2nd item (if you are just absolutely stomping) or 6th item (to finish off your build) Very nice synergy with Atma's Impaler due to the critical strike chance.
The Bloodthirster in my opinion is not as good as Infinity Edge on Renekton, but as an "AD Caster" Renekton really likes the huge amount of AD he gets from this item. If you can maintain the stacks, it is very powerful, but if you are dying a lot of are a main tank on your team, do not buy this item.
Against enemies with huge amounts of Armor, Last Whisper allows you to crack their tough shells. However, this item is not always easy to make room for because you only have access to so much money and so many item slots. If you are carrying your team and have someone else who is very tanky, you can fit this in. Otherwise, stick to damage + defensive items.
Don't buy this and Infinity Edge in the same game. Very expensive, but gives you the ability to throw out a huge amount of magic damage with Ruthless Predator
. Best against High Health High Armor targets.
This brand new item is a kick in the face to any AP champion. I hesitate to call it overpowered, but I believe that it is. It gives a massive 400 magic damage shield every minute, and has great synergy with Renekton's passive. One of the best items Renekton can build against an AP heavy team.
A great counter item to a fed AD carry. Also has good synergy with Atma's Impaler, and helps Renekton wreck squishy champions in team fights with its powerful AOE slow.
This item is not very strong on Renekton except in corner cases. It should be bought after a Randuin's Omen and Atma's Impaler have already been completed against a really AD heavy team. The reason for this is that Frozen Heart gives 500 mana, which is completely wasted on Renekton. However, the 99 armor and the Cooldown Reduction combined with the -20% attack speed aura are all amazing. This item would be amazing on Renekton if he didn't waste a large part of it.
Great when the other team is not killing you, but makes you vulnerable to crowd control and damage.
I buy these almost every game on Renekton because he likes resistance against crowd control. As a melee champion, strong slows stop him from really doing anything at all.
If the opposing team is low in crowd control and high in physical damage, buy these boots. Due to their low cost, Ninja Tabi can also be bought early on for the bonus movement speed and sold later once you can afford something else.