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Previous Lore

"Even if you don't have a spine, you still have to stand up for yourself." - ZacSquare Zac
Zac picture 2

Zac is the product of a Zaun experiment to manufacture a hexchem-engineered supersoldier - the Zaun Amorphous Combatant. Combining brute strength with limitless flexibility, he is a versatile juggernaut: a creative fighter who bounces over obstacles and pounds his foes into submission. Though he was created inside a weapons laboratory, Zac was rescued and adopted by two loving parents who raised him to be a kind and friendly child. As the years passed, he grew up to be a fierce hero, sworn to protect the ordinary, everyday people of Zaun.

Long ago, two Zaun scientists developed an organic substance that could withstand extreme conditions, spontaneously alter its biological structure, and generate tremendous amounts of kinetic force. As the scientists, husband and wife, watched the prototype grow from a spoon-sized droplet to a small Cell Division blob, they noticed that their creation would respond to their presence. It sprung forward when they called and bounced when they sang. The couple began to see more than an experiment: they saw a small child, filled with affection and joy.

After testing the prototype one evening, the scientists placed the blob back in its cage. It slouched and shuddered in the corner, inconsolably sad. At that moment, the couple realized that their beloved creation wished for a free life outside the lab. They were struck by their conscience and could not allow the prototype to be used as a weapon. The husband and wife fled with the young blob, replacing its weapon designation - Zaun Amorphous Combatant - with a proper name: Zac. In a quiet neighborhood far from the city of Zaun, the scientists raised Zac as their own child.

Zac picture 1

Zac was always different from the other children. None had his powers of strength and flexibility, so the couple taught him to tell right from wrong and to use his gifts responsibly. Thanks to the care and affection of his loving parents, Zac lived a peaceful, happy childhood.

That childhood ended when the Zaun laboratory finally found Zac. Unable to replicate the formula used to create the amorphous prototype, the laboratory's staff never stopped searching for the scientists and their experiment. When they tracked down the family, they threatened to tear it apart. The staff abducted Zac's parents and demanded that the couple assist in his capture and return. Seized by the fear of losing his freedom and his parents, Zac unleashed every ounce of his raw energy and mass for the very first time. He subdued his parents' captors, sent the laboratory's workers fleeing, and brought his loved ones home. From then on, Zac vowed to defend all ordinary lives threatened by extraordinary treachery and wickedness. Originally built to destroy, he now protects the innocent and the helpless.

Previous Abilities

Cell Division
RANGE: 50
STATIC COOLDOWN: 300
Cell Division old

Every time Zac damages at least one enemy with an ability, and for every enemy champion beyond the first hit by Elastic Slingshot Elastic Slingshot, he sheds a chunk of himself to a nearby location, landing towards visible nearby enemy champions (if any) and lasting for 6 seconds. Enemies can move over these chunks to destroy them while Zac can do so to consume them and restore 4% maximum health.

Upon taking fatal damage, Zac splits into 4 uncontrollable bloblets that move to his final location over 8 / 7 / 6 / 5 / 4 seconds. If any of these bloblets remain at the end of the duration, Zac recombines and returns at 10 - 50% maximum health (based on his bloblets' total remaining health)

Zac's size scales with his current health, getting larger when it exceeds his base health (based on level) and getting smaller the higher his missing health.

Ability Details
Cell Division is an on-spell effect with an on-death effect component.

Additional Information:

  • Cell Division's chunks spawn in two versions.
    • Contestable: They will fall to the ground between Zac and the nearest Sight icon visible enemy champion within 1000 range of him (dropping slightly in Zac's favor) Cannot be interacted with for the first 0.25 seconds (except during Let's Bounce! Let's Bounce!)
    • Uncontestable: They will fall to the ground near Zac and can be picked up immediately (version used by default)
  • Cell Division's chunk pick-up radius is the same for both Zac and enemy champions.
  • Zac's abilities cost 4% current health while chunks restore 4% maximum health (net healing equals 4% missing health)
  • Guardian Angel item Guardian Angel and Chronoshift Chronoshift will take precedence over Cell Division.


Stretching Strike
RANGE: 550
COST: 4% Current Health
COOLDOWN: 9 / 8.5 / 8 / 7.5 / 7
Stretching Strike

Active: Zac punches out in the target direction, dealing magic damage to all enemies hit and Slow icon slowing them for 2 seconds.

  • Magic Damage: 70 / 110 / 150 / 190 / 230 (+ 50% AP)
  • Slow: 20 / 25 / 30 / 35 / 40%
Ability Details
Stretching Strike is a direction-targeted area of effect.


Unstable Matter
RANGE: 350
COST: 4% Current Health
COOLDOWN: 5
Unstable Matter old

Active: Zac's body explodes outward, dealing magic damage to all nearby enemies (capped against minions and monsters) and becoming Ghost ghosted against monsters hit.

「 Magic Damage: 40 / 55 / 70 / 85 / 100 (+ 4 / 5 / 6 / 7 / 8% (+ 2% per 100 AP) of target's maximum health) 」「 Maximum Damage To Non-Champions: 240 / 255 / 270 / 285 / 300 」

Unstable Matter's cooldown is reduced by 1 second every time Zac picks up a Cell Division Cell Division chunk. If he picks them up while Unstable Matter is available to cast, the next Unstable Matter has its cooldown reduced by the same amount instead.

Ability Details
Unstable Matter is a point-blank area of effect.

Additional Information:

  • Unstable Matter has no cast time and does not interrupt Zac's previous orders.
  • Unstable Matter can be cast during Let's Bounce! Let's Bounce!.
  • Unstable Matter's cooldown reduction when available to cast is applied after Zac's.


Elastic Slingshot
RANGE: 1200 / 1350 / 1500 / 1650 / 1800 / 300
COST: 4% Current Health
COOLDOWN: 24 / 21 / 18 / 15 / 12
Elastic Slingshot old

First Cast: Zac channels for a short duration, increasing Elastic Slingshot's range over a cone in the target direction. Moving during the channel automatically cancels it, refunding 50% of Elastic Slingshot's cost and cooldown.

  • Maximum Channel Duration: 0.9 / 1.05 / 1.2 / 1.35 / 1.5

Second Cast: Zac dashes to the target location, dealing magic damage to all nearby enemies on impact and Airborne icon knocking them up for 1 second.

  • Magic Damage: 80 / 130 / 180 / 230 / 280 (+ 70% AP)
Ability Details
Elastic Slingshot is a ground-targeted area of effect.

Additional Information:

  • Elastic Slingshot can be used to launch Zac over walls.
  • Quick casting: Elastic Slingshot's channel begins when the key is pressed and held, launching Zac towards the cursor when released.


Let's Bounce!
RANGE: 300 / 400
COOLDOWN: 130 / 115 / 100
Let's Bounce! old

Active: Zac bounces 4 times, gaining 20 - 50% bonus movement speed as he does so but becoming unable to use basic attacks, Stretching Strike Stretching Strike, or Elastic Slingshot Elastic Slingshot for the duration.

Each bounce deals magic damage to all nearby enemies, Airborne icon knocking them back for 1 second and subsequently Slow icon slowing them by 20% for the same duration.

  • Magic Damage Per Bounce: 140 / 210 / 280 (+ 40% AP)

Enemies can be damaged by multiple bounces, with each beyond the first dealing 50% damage but not Airborne icon displacing them.

「 Additional Magic Damage: 70 / 105 / 140 (+ 20% AP) 」「 Total Single-Target Damage: 350 / 525 / 700 (+ 100% AP) 」
Ability Details
Let's Bounce! is a ground-targeted area of effect with a self-targeted buff component.


Pets
Control type Autonomous
Target type Minion
  • Bloblets can be targeted by Smite Smite, Consume Consume, and/or Force of Will Force of Will.
    • A Force of Will grabbed Bloblet, while visually separated from the others, will not delay Zac's revival or cause him to recombine with less current health.
  • Bloblet can be targeted by Teleport Teleport, becoming invulnerable for the channel's duration.
  • Taste Their Fear Taste Their Fear considers Bloblet 'isolated' when being the last one alive or after having merged with the others right before Zac recombines (Bloblet is not considered 'isolated' when close enough to the others)
  • Turrets will prioritize Bloblet over other minions.


Previous Splash Art

Patch History

V7.22
  • Stats
    • New: Now has +15% bonus attack speed at level 1.
    • Base armor increased to 33 from 24.
V7.17
  • Cell Division Cell Division
    • Bug Fix: Bloblets are now correctly invisible when in fog of war.
V7.15
  • Stretching Strikes Stretching Strikes
    • Current health cost increased to 8% current health from 4% current health.
    • Cooldown increased to 13 / 12 / 11 / 10 / 9 seconds from 12 / 11 / 10 / 9 / 8.
  • Unstable Matter Unstable Matter
    • Base damage reduced to 15 / 30 / 45 / 60 / 75 from 30 / 45 / 60 / 75 / 90.
  • Elastic Slingshot Elastic Slingshot
    • Bug Fix: Fixed a bug where he could channel Elastic Slingshot while under hard crowd control effects if he used it right before they were applied.
  • ZacSquare Special Weapon Zac [S|L]
    • Bug Fix: Recall's audio has been restored.
V7.13 June 30th Hotfix
V7.12
  • Unstable Matter Unstable Matter
    • Base damage reduced to 30 / 45 / 60 / 75 / 90 from 40 / 55 / 70 / 85 / 100.
  • Elastic Slingshot Elastic Slingshot
    • Base damage reduced to 60 / 110 / 160 / 210 / 260 from 80 / 130 / 180 / 230 / 280.
V7.11
  • General
    • Voice getting higher threshold reduced to 30% health from 60% health.
  • Elastic Slingshot Elastic Slingshot
    • Warning indicator before Zac lands increased to 1 seconds from 0.75.
  • Let's Bounce! Let's Bounce!
    • Bug Fix: Enemies no longer turn invisible if Zac tries to drop them in huge areas of unpassable terrain at Let's Bounce!'s max range (no such areas exist on Summoner's Rift).
V7.10 May 22nd Hotfix
  • Stretching Strikes Stretching Strikes
    • Base damage reduced to 30 / 40 / 50 / 60 / 70 from 40 / 80 / 60 / 100 / 120.
V7.10 May 17th Hotfix
  • Let's Bounce! Let's Bounce!
    • Bug Fix: Fixed a visual bug where if he died while charging Let's Bounce!, his ult kidnap animation would play on top of him for the rest of the game.
V7.10
  • Stretching Strikes Stretching Strikes
    • Base damage reduced to 40 / 60 / 80 / 100 / 120 from 50 / 70 / 90 / 110 / 130.
    • New Effect: Damage now scales with 2.5% of Zac's maximum health.
    • Second hit bonus attack range increased to 125 from 100.
    • New Effect: Second part of the spell now always spawns a second blob if it hits a unique unit.
    • Collision AoE size increased to 300 from 200.
    • Bug Fix: If the second hit would kill a minion or monster, the target will now wait to die until after Zac has slammed it into Stretching Strikes' first target.
    • New Effect: If the first target is standing on top of other enemies, the second hit will now reliably choose a different target than the first.
    • New Effect: Can now cast Unstable Matter Unstable Matter and queue up Elastic Slingshot Elastic Slingshot during Stretching Strikes' second attack and while slamming two targets together.
  • Elastic Slingshot Elastic Slingshot
    • New Effect: Knockup duration now scales from 0.5 to 1 second base upon how long Zac charges before release.
  • Let's Bounce! Let's Bounce!
    • Time to full charge time increased to 1.1 seconds from 1.
V7.9 May 4th Hotfix
  • Stretching Strikes Stretching Strikes
    • Slow duration increased to 0.5 seconds from 0.25.
  • Elastic Slingshot Elastic Slingshot
    • Base damage increased to 80 / 130 / 180 / 230 / 280 from 80 / 120 / 160 / 200 / 240.
V7.9
  • General
    • Zac's voice now changes in pitch and speed based on his current size.
    • Many of Zac's idle, movement, and emote animations have also been updated.
  • Stats
    • Base attack damage increased to 60 from 59.67.
    • Base armor increased to 24 from 23.88.
    • Base health increased to 615 from 614.6.
    • Base health regeneration increased to 8 from 7.92.
    • Health regeneration growth reduced to 0.5 from 0.55.
  • Cell Division Cell Division
    • New Effect: New ability icon.
  • Stretching Strikes Stretching Strikes
    • Renamed Stretching Strikes from Stretching Strike.
    • New Effect: New ability icon.
    • Cooldown increased to 12 / 11 / 10 / 9 / 8 seconds from 9 / 8.5 / 8 / 7.5 / 7.
    • Rework: Zac's arm stretches and grabs the first enemy it hits, dealing 50 / 70 / 90 / 110 / 130 (+ 30% AP) magic damage and slowing them by 60% for 0.25 seconds. Zac's next basic attack has 100 bonus attack range and is replaced with a long range smack that repeats the initial magic damage and slow effect. If Zac grabs a different enemy with each attack he'll throw them towards each other, dealing 50 / 70 / 90 / 110 / 130 (+ 30% AP) magic damage in an area if they collide.
  • Unstable Matter Unstable Matter
    • New Effect: New ability icon.
  • Elastic Slingshot Elastic Slingshot
    • New Effect: New ability icon.
    • Maximum channel duration before automatically cancelling reduced to 0.9 / 1 / 1.1 / 1.2 / 1.3 seconds from 0.9 / 1.05 / 1.2 / 1.35 / 1.5.
    • Base damage reduced to 80 / 120 / 160 / 200 / 240 from 80 / 130 / 180 / 230 / 280.
    • Knockup duration reduced to 0.5 seconds from 1.
  • Let's Bounce! Let's Bounce!
    • New Effect: New ability icon.
    • Rework:
      • First cast: Zac squishes himself down, making him immune to Crowd Control for up to 2.5 seconds. Any enemies standing on top of him are slowed by 30 / 40 / 50%.
      • Second cast: Charging for at least 1 second before recasting causes Zac to scoop up enemies on top of him, carrying them towards the target location. While flying through the air Zac is unstoppable. Upon landing nearby enemies take 150 / 250 / 350 (+ 70% AP) magic damage and are slowed by 25% for 0.5 seconds. Reactivating before Zac charges up knocks back nearby enemies instead.
V7.7
  • Cell Division Cell Division
    • Bug Fix: Fixed a rare bug where it could sometimes cause him to instantly revive (and potentially revive a second time if he's killed again before his bloblets recombined).
  • Elastic Slingshot Elastic Slingshot
    • Bug Fix: Fixed a bug where Flash Flashing right after casting it would change his position and move the range indicator, but the damage and knock-up would still be applied in the original location.
V7.5
  • ZacSquare Pool Party Zac [S|L]
    • Cell Division Cell Division
      • Bug Fix: Fixed a bug where moving the camera away and back would cause a chunk of Cell Division to disappear.
V6.21
  • General
    • Recommended items updated.
  • Elastic Slingshot Elastic Slingshot
    • New Effect: Warning indicator and shadow particles show up 0.75 seconds before Zac lands, appearing immediately if travel time is shorter than that.
    • Cast range updated to be more accurate for Zac.
V6.15
  • Elastic Slingshot Elastic Slingshot
    • Bug Fix: Zac jumping in a random direction if cursor hovers over minimap when casting.
V6.13
  • General
    • Bug Fix: Cracks in Chroma pack textures at 'very low' visual settings.
V6.9
  • General
    • Recommended items updated.
  • Stats
    • Movement speed increased to 340 from 335.
  • Cell Division Cell Division
    • Revive delay reduced to 8 / 7 / 6 / 5 / 4 seconds from 8 at all ranks.
V6.2
V5.23
  • Stats
    • Attack range increased to 175 from 125.
V5.19
V5.18
  • Elastic Slingshot Elastic Slingshot
    • Bug Fix: Tooltip updated to display new maximum channel time (0.9 / 1.05 / 1.2 / 1.35 / 1.5 seconds from 0.9 / 1.0 / 1.1 / 1.2 / 1.3).
    • Indicator updated to reflect new maximum range.
V5.16
  • Elastic Slingshot Elastic Slingshot
    • Maximum range increased to 1200 / 1350 / 1500 / 1650 / 1800 from 1150 / 1250 / 1350 / 1450 / 1550.
V5.12
  • Elastic Slingshot Elastic Slingshot
    • Animation updated.
    • Bug Fix: Animation errors (Zac running out quickly from within fog of war).
  • Let's Bounce! Let's Bounce!
    • Animation updated.
    • Bug Fix: Animation errors (Zac running out quickly from within fog of war).
V5.5
  • Unstable Matter Unstable Matter
    • New Effect: While available to cast, picking up Cell Division chunks reduces Zac's next cast's cooldown by 1 second (even when casting within the 1 second after a pick-up)
  • Elastic Slingshot Elastic Slingshot
    • Displacement duration increased to 1 second from 0.5.
V4.21
  • Elastic Slingshot Elastic Slingshot
    • Base damage increased to 80 / 130 / 180 / 230 / 280 from 80 / 120 / 160 / 200 / 240.
    • New Effect: Generates a Cell Division chunk for each enemy champion hit beyond the first.
  • Let's Bounce! Let's Bounce!
    • Displacement range increased to 400 from 250.
V4.11
  • Unstable Matter Unstable Matter
    • Cooldown increased to 5 seconds from 4.
    • New Effect: Cooldown is reduced by 1 second for every Cell Division chunk Zac picks up.
    • New Effect: Zac becomes ghosted when hitting monsters (for easier chunk pick-up).
V4.5
  • Stats
    • Base armor increased to 18 from 14.
V4.3
V3.10a
  • Cell Division Cell Division
    • Chunk pick-up radius reduced to 25 from 100.
  • Let's Bounce! Let's Bounce!
    • Removed: Granting Tenacity for the duration.
    • Tooltip updated to state Zac removes all slows affecting him upon activation.
V3.10
  • Elastic Slingshot Elastic Slingshot
    • Base damage reduced to 80 / 120 / 160 / 200 / 240 from 80 / 130 / 180 / 230 / 280.
V3.7
  • Stats
    • Base health regeneration reduced to 7 from 12.5.
  • Let's Bounce! Let's Bounce!
    • Base damage reduced to 140 / 210 / 280 from 160 / 240 / 320.
    • Tenacity reduced to 50% from 75%.
    • Bug Fix: Using a 25% AP ratio per bounce (instead of the intended 40% AP on the first and 20% AP on the rest).
V3.6
  • General
    • Transparency when hiding in brush increased.
V3.5
  • Added.

References