Joule Builds

Last changed 7/25/2016 for update 1.20.

You’ll find the best and most popular builds for Joule on this page! For more information regarding situational items, check out our guides for situational items on roams and carries! To see how well this hero performs in the current meta, check out our hero tier list.

The Earthsplitter

Joule is a fantastic hero for dishing out massive AoE (Area of Effect) crits with Thunder Strikes. This build maximizes the damage from Thunder Strike and is played in both lane and jungle.

Skill Path

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This build focuses heavily on critical strikes from Joule’s B, Thunder Strike, which cannot critically strike until overdriven. Obviously, you should max Thunder Strike first. Most follow up by maxing out her ultimate to pick off kills from extreme range with her Big Red Button, though some players prefer to take the overdrive on Rocket Leap to reduce its cooldown.

Core Items

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Weapon Power Joule should usually start off with a Swift Shooter or Weapon Blade in jungle, or a Book of Eulogies if you’re in lane. You’ll want to rush a Sorrowblade for the huge boost in raw Weapon Power that it provides. This will provide a large base Weapon Power that is multiplied fantastically with additional crit, and you’ll usually finish Sorrowblade at or before level 8 (when Thunder Strike is able to crit). After that, you want to work towards stacking crit as efficiently as possible; this is achieved by first buying two to three Minion’s Feet, then upgrading each of these into Lucky Strikes. After that, you can finish them off into Monocles.

As Needed

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Crit items require a large number of item slots, so a WP Joule typically only builds only one or two defensive items. Because of this, you’ll want to maximize the amount of defense that you get, so you’ll usually want to opt for selfish defensive items such as Aegis, Metal Jacket, or Crucible instead of Fountain of Renewal or Atlas Pauldron, which offer more team utility but less personal protection. As a fourth offensive item, you can build either a Tornado Trigger to round out your crit chance to 100%, or build Breaking Point to help boost your Weapon Power.

The Jagerbomb

Slightly less popular than the Weapon Power crit build, CP Joule is much less reliant on auto-attacks and Thunder Strikes than WP Joule (though landing Thunder Strikes are still important!), instead leaning towards landing clutch Rocket Leaps and Big Red Buttons. It can be played in either lane or jungle. Obviously, start Book of Eulogies if you are in lane!

Skill path

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Whether Lane or Jungle, Joule will need her B, Thunder Strike, at Level 1 to farm and damage enemies, but her Rocket Leap is the real source of The Jagerbomb’s burst. Additionally, Rocket Leap is a fantastic way to reposition to line up a huge Big Red Button, so the cooldown reduction on the overdrive is too large to pass up. Joule’s ultimate, Big Red Button, should be maxed out on this build to reduce its cooldown and for increases in base damage!

Core Items

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Frostburn is a fantastic item for Crystal Joule. When you use her ultimate, the first tick of damage will apply Frostburn’s slow to your enemies, keeping them in the laser beam for longer. Broken Myth works as a second item because it adds a decent amount of raw Crystal Power into Joule’s enormous CP ratios, but also amplifies the huge base damage on her skills. Clockwork is used to speed up the cooldowns on Rocket Leap and Big Red Button.

As Needed

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As above, defensive items should generally be selfish and are situational on Joule. For additional damage, you’ll usually build a Shatterglass or two after your core items.


Return to the builds page! For more information regarding situational items, check out our guides for situational items on roams and carries!