

Zac Arena Build Guide
“The Secret Weapon”
Zac is the product of a toxic spill that ran through a chemtech seam and pooled in an isolated cavern deep in Zaun's Sump. Despite such humble origins, Zac has grown from primordial ooze into a thinking being who dwells in the city's pipes, occasionally...
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Recommended Items for Zac in Arena
Optimal 2v2 combat item build path for Zac. Build your core synergy items first, prioritize speed with tailored boots, and adapt situational picks to counter enemy comps.











Best Augments for Zac in Arena
Top-performing Prismatic, Gold, and Silver augments tailored to maximize Zac's combat scaling, ability cooldowns, and survivability in 2v2 Arena rounds.
Gain Shield after Immobilizing or Grounding an enemy champion.
Become large, gaining 15% Health and 10% Adaptive Force.
Gain an aura that continuously harvests permanent Cursed Power per enemy champion inside. Gain max Health based on your Cursed Power.
Gain increased size and percent bonus Health per takedown.
Gain 1000 Health, but you deal 10% less damage.
Requirement: Possess Heartsteel with 400+ stacks. Reward: Multiply your Heartsteel stacks by 3. Increase your Health Regeneration by 12.5% of your Heartsteel stacks.
There is a tether connecting your team, deals constant magic damage to enemies it touches.
Immobilizing or Grounding enemy champions heals you.
Immobilizing enemy champions grants you permanent Cursed Power. Gain Armor and Magic Resistance based on your Cursed Power.
Best Prismatic Items for Zac in Arena
Prismatic items tier list ranked by performance synergy on Zac. Aim to roll S-Tier items in your round 3 anvil choices to secure early combat dominance.













































Zac Abilities & Kit Overview
Comprehensive breakdown of Zac's passive and active spells in Arena mode, highlighting ability interactions and combo execution.

Cell Division
Each time Zac hits an enemy with an ability, he sheds a chunk of himself that can be reabsorbed to restore Health. Upon taking fatal damage, Zac splits into 4 bloblets that attempt to recombine. If any bloblets remain, he will revive with an amount of Health depending on the Health of the surviving bloblets. Each bloblet has a percentage of Zac's maximum Health, Armor and Magic Resistance. This ability has a 5 minute cooldown.

Stretching Strikes
Zac stretches an arm, grabbing an enemy. Attacking a different enemy will cause him to throw both targets towards each other.

Unstable Matter
Zac explodes outward towards nearby enemies, dealing a percentage of their maximum health as magic damage.

Elastic Slingshot
Zac attaches his arms to the ground and stretches back, launching himself forward.

Let's Bounce!
Zac bounces four times, knocking up enemies hit and slowing them.
Frequently Asked Questions about Zac in Arena
Common Arena build strategies, augment interactions, and item synergies answered for Zac.
The best Arena build for Zac in patch 16.17.1 currently sits at Tier B (49.44% win rate). The optimal core items include Black Hole Gauntlet, Heartsteel, Spirit Visage, paired with Mercury's Treads or Plated Steelcaps. Adjust your situational items to counter burst assassins, heavy tanks, or healing comps in later rounds.
The top Prismatic augments for Zac are Courage of the Colossus, Goliath, Dreadbringer. These augments provide massive combat scalings and ability enhancements that synergize directly with Zac's kit to win late-game rounds.
The best Prismatic items to roll on Zac include Black Hole Gauntlet, Cruelty, Radiant Virtue. Securing one of these S-Tier prismatic items in the early rounds gives Zac a decisive stat and passive advantage over enemy pairs.