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Zac Build Guide by ThePowerUp

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League of Legends Build Guide Author ThePowerUp


ThePowerUp Last updated on April 5, 2013
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Ability Sequence

Ability Key Q
Ability Key W
Ability Key E
Ability Key R

Not Updated For Current Season

The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.



Offense: 7

Honor Guard

Defense: 23


Utility: 0

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None To Report! (Currently)

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Hello, and welcome to my build for Zac.

Zac is one of my favourite Champions. He's fun, and more importantly if you know how to play as him he can have a very high likelihood of survival. While his passive will help you, I encourage you read this whole guide for many tricks which will help you last a lot longer in the game and help drive your team to the enemy Nexus!

*This Build Will Undergo Changes Periodically, So Do Check The Updates Chapter To See What's Changed*

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Pros / Cons


+ Excellent Survivability.
+ Goo Chunks Act As Great Health Pick-Ups.
+ Great Escape Move With Elastic Slingshot [E].
+ Strong Pusher.
+ Excellent Crowd Control With Unstable Matter [W].
+ Elastic Slingshot Can easily be activated from the Fog Of War. Great of ambushes.


- Needs Strong Lanemate; Especially In The Early Game. Because, Otherwise Enemies Will Crush Goo Pieces.
- Elastic Slingshot Is Vulnerable To Stuns, Roots, And Knock-ups.
- If Cell Division Activates Where It's Easy For Enemies To Kill The Bloblets You're Practically Dead Anyways.

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PASSIVE: Cell Division

Each time Zac hits an enemy with an ability, he sheds a chunk of himself that can be reabsorbed to restore 4% of his maximum health.
Upon taking fatal damage, Zac splits into 4 chunks that attempt to recombine. If any of these chunks remain after 8 seconds, he will revive with 10-50% health depending on the health of the surviving chunks. Each chunk has 12% of Zac's maximum health, and 50% of his armor and magic resistance. This ability has a static cooldown and is unaffected by cooldown reduction.

Cell Division has to be one of the best passive's in the game. For one, it will dispense small globlets of health that you can pick up. This is essential for staying in lane, providing teammates time to recall even. Once you have Zac with a high amount of HP; you'll be able to push hard.
Secondly, Cell Division allows you to regroup four blobs to help you recover your health. Use this with Elastic Slingshot to get you within turrets range or within a teammate or two and you'll be fine. If you see your health dipping considerably keep your eye on your cooldowns for both Elastic Slingshot and Cell Division as they'll save your life more times then you can count.

Q: Stretching Strike

Zac lashes out with an elastic punch, dealing 70 / 110 / 150 / 190 / 220 (+ 50% AP) magic damage to all enemies hit and slowing them for 20 / 25 / 30 / 35 / 40% 2 seconds.

Stretching Strike may not be the best on its own, in fact, while it's good for clearing minions and getting a great last kill on some running enemies it's generally not the skill I use generally on it's own. At higher levels it is more powerful, but again, use in combination for greater effect.
However, if you use it with Elastic Slingshot, you can leap over a group, land and damage those you just hit, then use Stretching Strike on any stragglers.

You can also use Unstable Matter and Stretching strike if you have an enemy Champion hiding behind minions. This is great if you have someone like Blitzcrank or Caitlyn as your lanemate who's moves require no interference from minions for a successful skillshot.

Due to it's great effect, especially against enemy champions, we're going to max this first.

W: Unstable Matter

Zac's body erupts, dealing 40 / 60 / 80 / 100 / 120 magic damage equal to a base amount plus a percentage of 4 / 4.5 / 5 / 5.5 / 6% (+ 2% per 100 AP) of their maximum health to all nearby enemies (max 200 damage against minions and monsters).

As I told you earlier, combo. A great combo for Zac is the triple hit combo of Elastic Slingshot, followed by Let's Boune, and Unstable Matter. It's great for when you have enemy champions clinging to their minions. It also works great as an ambush if you can manage to land from the other side of trees.
+ +
While it's a great AOE move, I still think you're better off with Stretching Strike against singular threats. Still, you'll want to max Unstable Matter second as it's great for crowd control.

E: Elastic Slingshot

Zac faces the cursor and begins charging for up to 1 second. After 1 second or after reactivating the ability he launches himself towards the target location, dealing 80 / 130 / 180 / 230 / 280 (+ 70% AP) magic damage to all enemies hit and knocking them back for 0.5 seconds.

Can be cancelled by moving; refunding 50% of the health cost.

Elastic Slingshot for the purpose of this build is more of a movement skill then a offensive skill. While it does provide damage, never rely on it for anything more then to get you closer or farther away from your targets. I've covered the excellent combos you can do with Zac earlier and you'll notice a trend of using Elastic Slingshot to get Zac into position. Never forget this and you'll be golden.

Due to the fact that for most of the match you won't need it at max level, we'll max this skill last of your primary three.

R: Let's Bounce

Zac leaps into the air and begins to bounce on the ground, up to a maximum of 4 bounces. Each bounce deals 160 / 240 / 320 (+ 25% AP) magic damage to nearby enemies, knocks them up for 1 second, and slows them by 20% for 1 second. Enemies hit more than once take half damage and are not knocked up or slowed. Zac gains an accelerating movement speed buff (20-50%) while active.

Zac can right-click and can activate Unstable Matter to move while in the air. While active, Zac is unable to activate Stretching Strike or Elastic Slingshot.

As someone who enjoys playing as Zac, even I have to admit that this move is extremely OP'd. It essentially turns Zac into a wrecking ball, destroying anything in its path. Do remember, that when enemy champions see you using this move that they'll immediately try to escape. As I covered earlier, the best thing you can do is use Elastic Slingshot to ambush your foes followed up by Let's Bounce. It gives you the element of surprise and gives your foes less time to think and more time to take damage, as I mentioned earlier follow this up with Unstable Matter and you can get double (or even triple) kills easily.


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Greater Mark Of Magic Penetration is going to help boost all of your core skills. This is a critical Rune if you plan on dealing a ton of damage as Zac. Especially against any enemy champions who are trying to boost their Magic Resist.

Both the Greater Glyph of Magic Resist and the Greater Quintessence of Magic Resist are going to keep you alive longer. Yes, having high HP and Cell Division help; but Magic Resist is going to help you out as well. Same goes for the Greater Seal of Armor except you're just boosting your Armor, on top of the Magic Resist.

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Like everyone else on Mobafire, I can't go without recommending Flash enough. It has gotten any champion of mine; regardless of build, role, or champion out of major trouble.
More specific to this build is Exhaust which I find can help when you have a low HP enemy running away from you. Exhaust followed by Stretching Strike can easily rectify this.

Heal can be helpful if you're having trouble staying alive in the early game, but you shouldn't have this problem regularly.

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Doran's Shield is probably the best way to start off with Zac. This will give him the small boost to Health and Armor, while also providing a small amount of Health Regen.

You can also recall and get some Health Potions but do remember that since Zac gives off chunks of himself that will heal you, that you're better off just pressing the enemy offensively then hiding in the bushes healing with the potions. Again, it's there if you need it.

Almost any Champion or Build can benefit from the small boost in movement speed that Boots of Speed allow. You'll be replacing these with the more Build-specific Sorcerer's Shoes in a bit but in the interim it's useful.

Giant's Belt is going to give what's to be the first of many boosts to your Health. While it's not much in the grand scheme of things, it'll certainly give you a poignant edge during the early game and if you get this item early enough it can help provide you with a sizable lead early on.

As I stated earlier, Sorcerer's Shoes are more build specific. They function much in the same way as the Boots of Speed, but the added Magic Penetration will come in handy.

Sunfire Cape is generally going to help you farm. It should help you widdle down minions and get the gold you need to get some of the higher priced items, ence why we get this earlier on then a lot of the higher priced items.

For the purposes of this build, Phage is great! It gives you health, attack damage, and a chance to slow your foes. Which is helpful with many of Zac's skills.

While we're generally after Wit's End for the Magic Resist, it's also helpful for the increase in Attack Speed, something you're generally not going to see outside of the one item.

Upgrade from Phage to Frozen Mallet for enhanced, but similar, effect.

A great defensive item, Randuin's Omen is what I consider to be the penultimate item for this build. It boosts your health and armor whilst providing an excellent unique active which will keep your enemies moving at a snails pace. Excellent for delivering killing blows and racking up Ace's even!

OK, so in my multiple matches as Zac, I rarely (if ever) get to this point where I need Abyssal Scepter, but it happens. Generally, I'll sell Doran's Shield to make room for this if enemy champions are proving stubborn. Most matches will rarely get to this point, but be prepared to buy this if you need to.

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Summary + Results (How Good Is This Build?)

I'm going to wrap this up by stating how durable of a champion Zac truly is. In my experience with him and this build, I find that it's easy to push top lane and destroy enemy champions easily. He's excellent for ambushes, and with a high amount of Health, he can survive most skirmishes no problem. If you're looking to wreck house, Zac is your champion.

I encourage you guys to Tweet @ Me with suggestions for this build. While I got this build started, you guys are certainly encouraged to help grow it beyond what it currently is.

Finally, I want to share my Match History with this build. Show you what it's capable of. If you want, email or tweet me yours and I'll share it on this page.