Ever since I first saw the sneak preview of Rumble, I first thought "It looks like a cross between Blitz and Teemo... He's gonna suck." I WAS SO WRONG. I bought Rumble for the shiggles and I instantly loved him. He is almost an equivalent of Mordekaiser, but he's better by far in my opinion.

Also, this is my first build. I hope you will give me some feedback and constructive criticism! =)

I use basic tanky-mage runes. And since Rumble doesn't use Mana, it leaves much more room for tanky runes and items. His AP ratios are kinda mediocre, so it's best not to take any AP or AP/lvl Glyphs. Trust me, MR/lvl Glyphs are very underrated. You'll notice a big difference in burst casters' late-game effectiveness against you.

As is with Mordekaiser, a 9/21/0 Mastery set-up is the most effective way to go with Rumble.

First, you're going to want to start out with a Doran's Shield for several reasons. You're going to be charging in to harass your enemies early-game. It also gives you impressive Armor combined with your Seals and plenty of HP regen to keep you in the lane longer.

Once you head back to base the first time, your first priority is Boots. If you have enough gold after that, you can buy one or two Amplifying Tomes, or if you're doing decent enough to get some kills and/or farms, you can finish your Hextech Revolver. The Revolver is something I added a while after I played Rumble for one simple reason: Survivability. Using your Flamespitter on a wave of 5-6 minions to heal for huge amounts quickly? Please and thank you.

Next up is to finish your Sorcerer's Boots. Then you should focus on rushing your Rylai's Crystal Scepter. With the extra AP and slow combined with your Flamespitter and Scrap Shield to chase enemies, it's an instant core item on Rumble. Also, it increases the slow amount on your Electro Harpoon and even better, your Equalizer.

The next few items are situational. If you need more defenses before killing power, get your Abyssal Scepter and Zhonya's Hourglass. These both give incredible defenses and Amazing offensive power. REMINDER: USE THE HOURGLASS'S ACTIVE. This can save your life in ways you can't imagine. Activating your Scrap Shield right as you come out of the stasis is a great way to escape team fights when you get low.

After you get the Scepter, Hourglass, and Deathcap, your next step is to get enough gold to finish your Hextech Gunblade. Oddly enough, hybrid items work quite well with Rumble's passive. In some games, I've even gotten a Guinsoo's Rageblade and it doesn't work too badly.

Of course, you'll have to sell your Shield to make room for items when you need it.

Flamespitter and Scrap Shield should be your first priorities when considering Skills (and your Equalizer when you can, of course). I like to keep them level with each other as to not have either of them too weak. At level 3, I stop to take a rank in Electro Harpoon mainly for the first level of slow. Also, it helps build your Heat up faster.

I either go two ways for Rumble. Ignite and Flash, or Ghost and Teleport. The first is for extra damage and flash-over-wall shenanigans when chasing or running away. The other option is purely for mobility. Ghost will help you get into range for your Equalizer or get to team fights where Rumble shines. Teleport is for both defending towers and teammates and pushing lanes that are left unattended when the opportunity arises.