Many people under estimate the power of this little guy. Rumble is capable of dishing out extremely high amounts of AOE damage while not taking much in return. good placement and timing of The Equalizer and Flamespitter can solely win your team a fight as it provides so much damage and the ability to split teams apart. In low elo games Rumble isn't as common as some champions and so he is perfect for carrying a game as not many people know exactly what he is capable of. if you get good at rumble you will be able to carry your team to victory!

Good Points Pushes lane well early. Strong in lane. Does lots of Aoe damage. Can survive ganks, especially after 6. Very strong team fights Capable of zoning enemy team

Bad points No gap closers. Easy to gank if pushing lane early. Falls of a bit late game.

The runes i generally run on Rumble include 3x Greater Quintessence of Ability Power, 9x Mark of Magic Penetration, 9x Seal of Armor with 5x Glyph of Ability Power and 4x Glyph of Scaling Magic Resist. These are especially useful when playing against an AD laner due to the armor you get from the seals, and you also get the extra MR for late game. The AP you get from these runes along with the Magic Penetration allow you to deal lots of damage in lane with your Q. So you can bully your opponent into missing CS.
Overall these runes just help rumble to be much stronger in lane as he can take more damage but also deal a lot more to his opponent. Glyph of scaling magic resist

Rumble has many essential items, and the items you buy for rumble can lead to you winning or losing a game. Below i will create a list of items that are useful for Rumble and why so you can determine what situations they will be good for.

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Liandry's Torment is a very good item to buy on Rumble and in almost all builds it is best to rush a Haunting Guise. Liandry's Torment is a great item for rumble as it gives him health, ability power and magic penetration, which are all very useful for him. The passive however is what makes the item most useful. the passive allows the user to deal damage over time to enemies depending on their current health. so the more health they have the more damage you do. but then pair this up with Executioner you do a lot of damage no matter how high or low health they are. it also does more damage to movement impaired enemies. so if you manage to hit someone with your Electro-Harpoon it is useful to follow up with Flamespitter to get the extra damage from the item.

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Zhonya's hourglass is another very useful item. it gives Rumble the armor he often needs to survive in lane through the Seeker's Armguard and then he also gains the usefulness of the active the item gives later on in the game, which in some scenarios can be extremely useful. The reason the active on this item is so good is that rumble can still deal a lot of damage while he is invulnerable. if a champion tries to jump onto you, it is possible to put down The Equalizer on top of you and use Flamespitter and then use the zhonya's active. so the other champion will be sat on your Q and ult and take a lot of damage, which can often be enough to kill a weaker opponent. This is why I feel that this item is essential for Rumble' kit.

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Void staff is another great item for any Ability power champion and often makes it into my build on rumble. this item is very useful alongside Liandry's Torment as they both provide magic penetration. Void Staff is very useful on Rumble as generally you are likely to come across someone building magic resist to reduce the damage you do. by buying a void staff you can still do a lot of damage even to people who have bought magic resist items. I wouldn't make void staff one of the first items to buy on Rumble as it is much better to get some damage first, due to Void staff not giving as much ability power as other items.

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Rylai's Crystal Scepter is another great item for Rumble and works really well with the Liandry's Torment which is part of Rumble's core build. The item provides a slow which can be very useful for chasing opponents with your Flamespitter and Electro-Harpoon which already has a good slow. The health on Rylai's is also good for Rumble making him able to survive fights a lot easier.

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Although I don't normally build Rabadon's Deathcap on Rumble that doesn't mean it is not a viable item for him. Buying deathcap can mean that Rumble does a lot more damage however you often have to sacrifice a lot of health or other defences in order to buy one, leaving you much more vulnerable in team fights.

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Either Nashor's Tooth or Wit's End can both be very good for Rumble as they go really well with his passive Junkyard Titan which allows him to do extra damage with auto attacks while he over heats. Buying either of these items allows you to make full use of this part of Rumble's passive dealing out even more damage even while overheating. I would however only really recommend buying these items if they don't have much crowd control as you are going to need to get close to the enemy if you want to use your auto attacks.

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the final damage item I will look at in Will of the Ancients. this item can be good on Rumble however I would not normally recommend it. it can be useful to buy a Hextech Revolver if you want more sustain in lane but I feel that late game there are more useful items for Rumble which cannot be bought if you decide to go for Will of the Ancients.

As an AP off tank we are obviously also going to need to buy some items that make Rumble a bit more bulky. The items you are should change depending on what champions you are playing against. for example if you are playing against a double AP composition with an AP midlane and top lane, then it would be better to build more magic resist than armour. Rumble will already get quite a lot of health and armour from the damage items you buy such as Rylai's and Zhonya's.

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Randuin's Omen can be a useful item as it gives a lot of health and armour. it also provides Rumble with a useful slow to go with Liandry's Torment and his Flamespitter. The slow can be very useful in team fights and often if you are tanky enough you can get into their team and use your slow along with Q to deal lots of damage to their whole team.

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Both of these items are good against heavy AP comps. If you are not sure which to buy then one way to decide is on what type of abilities the opponent has. if they have a lot of single target abilities that you could really do with not being hit by, such as a Morgana Dark Binding or Blitzcrank Rocket Grab then it is better to buy a Banshee's Veil as the passive will allow you to take one of these abilities and not take the damage or the effect. if the other teams damage mainly comprises of lots of area of effect magic damage, or not much Crowd control, such as a Cassiopeia or Fizz, Spirit Visage may be the better option. Locket of the Iron Solari can also be a more useful Magic resist item, especially in terms of team fights as you can give your team mates extra magic resist and a shield.

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The final Defensive item I would be likely to buy is Warmog's Armor. this item provides a lot of health and also the passive which regenerates health based on your maximum health goes well with items such as Liandry's Torment or Rylai's Crystal Scepter. It is a good idea to build Warmog's Armor if the enemy team has a lot of Ability power and Attack damage as Health stops both of these rather than focusing on one.

There are other defensive items that could work on Rumble, such as Locket of the Iron Solari but I would normally just recommend staying with the ones above and primarily build damage.

When playing as Rumble I will generally put a skill point in Flamespitter right at the start of the game and I will keep using it to warm it up. if you keep using it as soon as it comes off cool down then you will slowly start to overheat, although you don't actually want to over heat. it is best to try keep your bar just over the half way mark so you get the extra damage from your passive without over heating. if you manage to do this then you can do a lot more damage early game making it much easier to trade in lane. when you hit level 2 it doesn't really matter whether you skill Electro-Harpoon or Scrap Shield. however it is normally better to level your scrap shield as Flamespitter can often do enough damage for you. after level 3 you want to max Flamespitter and then Scrap Shield as the extra shield you gain is very useful, and level 1 harpoons are still good for the slow they give. And then just level your The Equalizer at 6, 11 and 16.

Flash is pretty much a must on any Rumble as he does not have any gap closers or escapes.

Ignite is normally the second summoner spell you want to take as it is most useful in a 1v1 situation, especially in solo queue if you want to carry a game, as it means you can win lane much easier.

Teleport is another option you could take, it allows you to stay in lane and farm and then teleport into team fights, however this generally requires good communication and so isn't always the best for solo queue, especially at low elo.

So now that we have everything sorted for this build we now need to get on to how to use him properly in game. Farm can be very important on Rumble as it is useful to get ahead of your opponent early as he is very good at snowballing. If you get your Haunting Guise early then you will normally have the edge in lane. Key to getting this item early is good farming. Rumble is not the easiest champion to CS with as it is easy to mess up last hitting minions with your flame thrower. It takes time to get used to last hitting minions while trying to push the wave with your Flamespitter. Once you get used to last hitting while using your flame thrower you can be a much better Rumble player.
Some tips I would give for farming with Rumble is that you can always use your passive to help you farm in the early game. Junkyard Titan gives you quite a lot of extra damage with your auto attacks which can help you finish off minions. however you will lose the extra damage on your Q until you manage to build it back up again

Team work is very important for Rumble. He can be the difference in any team fights due to the amount of zoning and damage potential he has. a well placed The Equalizer can shred an enemy team to pieces. it is often a good idea for you and your team to try and fight in the jungle or around objectives such as baron or dragon when you have your ult up. this is because there are many narrow passages in the jungle so it is much easier to keep people on your ult so you get the most damage possible out of it. Rumble is good on the front line as he can be fairly tanky. it is often good to go into the fight with your ult and q, making sure you have your q warmed up so you get the extra damage. if you hit your ult right then it will deal a lot of damage to the enemy team. one thing that I find works well, especially in low elo games, is that if you go into their team and place the ult on yourself, the enemy team will try kill you. if you have Zhonya's Hourglass up you can use that while on your ult, so you take no damage but deal lots out in return, also alloying your team to clean up.

So overall Rumble is a great champion due to the amount of damage he can deal and not take as much in return. he is not the hardest champion to use once you get to know him and he is very good for carrying you out of low elo leagues as not many people know how to play against him. I would highly recommend trying out this build to see if it works for you.

Thanks for reading my guide and I hope it helped =)
If you have any questions or things you see wrong with my guide please feel free to comment