
Zac Build
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 emerging to help those who cannot help themselves or to rebuild the broken infrastructure of Zaun.
The most played Zac Top build on patch 26.21 runs Grasp of the Undying with Demolish, Second Wind and Revitalize, plus Last Stand and Legend: Haste from the secondary tree. Take Flash and Ignite. Start with Doran's Shield and Health Potion, then build Sunfire Aegis, Plated Steelcaps and Spirit Visage, followed by Thornmail, Unending Despair and Jak'Sho, The Protean. Max W (Unstable Matter) first, then E (Elastic Slingshot), then Q (Stretching Strikes). It has a 52.5% win rate and a 0.5% pick rate.
Runes
Primary
Grasp of the Undying
Every 4s your next attack on a champion deals bonus magic damage, heals you, and permanently increases your health.
Grasp of the Undying
Every 4s in combat, your next basic attack on a champion will:Deal bonus magic damage equal to 3.5% of your max healthHeal you for 1.3% of your max healthPermanently increase your health by 5 Ranged Champions: Damage, healing, and permanent health gained are 40% effective.
Demolish
Your third attack against turrets deals bonus damage.
Demolish
Your third attack against towers deals [85 (+28% max Health) Melee || 50 (+20% max Health) Ranged] bonus physical damage. Cooldown: 30s
Second Wind
After taking damage from an enemy champion heal back some missing health over time.
Second Wind
After taking damage from an enemy champion, heal for 4% of your missing health over 10s.
Revitalize
Gain 5% Heal and Shield Power. Heals and shields you cast or receive are 10% stronger on targets below 40% health.
Revitalize
Gain 5% Heal and Shield Power. Heals and shields you cast or receive are 10% stronger on targets below 40% health.
Secondary
Last Stand
Deal more damage to champions while you are low on health.
Last Stand
Deal 5% - 11% increased damage to champions while you are below 60% health. Max damage gained at 30% health.
Legend: Haste
Takedowns on enemies grant permanent Basic Ability Haste.
Legend: Haste
Gain 1.5 basic ability haste for every Legend stack (max 10 stacks). Earn progress toward Legend stacks for every champion takedown, epic monster takedown, large monster kill, and minion kill.
Summoner Spells
Flash
Cooldown 300s
Flash
Cooldown 300s
Teleports you a short distance toward your cursor.
Ignite
Cooldown 180s
Ignite
Cooldown 180s
Deals true damage over time to target enemy champion and reduces healing effects on them for the duration.
Skill Priority
WUnstable Matter
Cooldown 5s
Zac explodes outward towards nearby enemies, dealing a percentage of their maximum health as magic damage.
EElastic Slingshot
Cooldown 21/18/15/12/9s
Zac attaches his arms to the ground and stretches back, launching himself forward.
QStretching Strikes
Cooldown 14/12.5/11/9.5/8s
Zac stretches an arm, grabbing an enemy. Attacking a different enemy will cause him to throw both targets towards each other.
Item Build
Full build 15,150gStarting Items
Doran's Shield
450g
Doran's Shield
- 110 Health
Enduring Focus Restore 4 Health every 5 seconds. After taking damage from a champion, restore Health over 8 seconds. Helping Hand Attacks deal 5 bonus physical damage to minions.
Health Potion
50g
Health Potion
Consume Restores 120 Health over 15 seconds.
Core Build
1Sunfire Aegis
2,800g350 HP · 50 Armor · 10 AH
Immolate
Sunfire Aegis
2,800g- 350 Health
- 50 Armor
- 10 Ability Haste
Immolate After taking or dealing damage, deal magic damage per second to nearby enemies for 3 seconds.
2Plated Steelcaps
1,200g25 Armor · 45 MS
Plating
Plated Steelcaps
1,200g- 25 Armor
- 45 Move Speed
Plating Reduces incoming damage from Attacks by 10%.
3Spirit Visage
2,700g400 HP · 50 MR · 10 AH · 100% HP Regen
Boundless Vitality
Spirit Visage
2,700g- 400 Health
- 50 Magic Resist
- 10 Ability Haste
- 100% Base Health Regen
Boundless Vitality Heals and Shields on you are increased by 25%.
4Thornmail
2,450g150 HP · 75 Armor
Thorns
Thornmail
2,450g- 150 Health
- 75 Armor
Thorns When struck by an Attack, deal magic damage to the attacker and apply 40% Wounds for 3 seconds if they are a champion.
5Unending Despair
2,800g400 HP · 50 Armor · 15 AH
Anguish
Unending Despair
2,800g- 400 Health
- 50 Armor
- 15 Ability Haste
Anguish Every 4 seconds while in combat with champions, deal magic damage to nearby enemy champions and heal for 250% of the damage dealt.
6Jak'Sho, The Protean
3,200g350 HP · 45 Armor · 45 MR
Voidborn Resilience
Jak'Sho, The Protean
3,200g- 350 Health
- 45 Armor
- 45 Magic Resist
Voidborn Resilience After 5 seconds of champion combat, increase your bonus Armor and Magic Resist by 30% until end of combat.
Abilities & Skill Path

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.
QStretching Strikes
Cooldown 14/12.5/11/9.5/8s
Zac stretches an arm, grabbing an enemy. Attacking a different enemy will cause him to throw both targets towards each other.
WUnstable Matter
Cooldown 5s
Zac explodes outward towards nearby enemies, dealing a percentage of their maximum health as magic damage.
EElastic Slingshot
Cooldown 21/18/15/12/9s
Zac attaches his arms to the ground and stretches back, launching himself forward.
RLet's Bounce!
Cooldown 120/105/90s
Zac bounces four times, knocking up enemies hit and slowing them.