Co-op Commander Guide: Abathur

Evolution Master

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Commander Summary

Abathur uses biomass collected from the enemy's fallen units to enhance his own units. Some units can evolve into Ultimate Evolutions - massive units that can lead the charge against Amon.

Level Unlocks

Level/Icon Name Description
Biomass Harvester Biomass Harvester
  • Abathur's units gain increased life, attack speed, and energy regeneration by collecting Biomass from fallen enemies.
  • Roaches do not cost vespene gas.
  • Larvae spawn at an increased rate.
Ultimate Evolution Ultimate Evolution Unlocks the ability for ground units with 100 stacks of Biomass to evolve into Brutalisks. Air units with 100 stacks of Biomass evolve into Leviathans.
Virulent Nests Virulent Nests Enemies damaged by Toxic Nests drop additional biomass and have attack and movement speeds slowed. Toxic Nests have a chance to respawn on death. Toxic Nests cannot be targeted by the enemy.
Roach Warren Upgrade Cache Roach Warren Upgrade Cache Unlocks the following upgrades at the Roach Warren:
  • Roaches gain +6 armor when under 50% life.
  • Increase the damage of Ravager's Corrosive Bile ability by 20.
Improved Mend Improved Mend Mend can store up to 3 charges and its cooldown is reduced by 30 seconds.
Evolution Chamber Upgrade Cache Evolution Chamber Upgrade Cache Unlocks the following upgrade at the Evolution chamber:
  • Allow Hatcheries, Lairs and Hives to birth two Swarm Queens simultaneously.
  • Increase the healing of the Swarm Queen's Rapid Transfusion by 10 and allow it to heal both biological and mechanical units.
Biomass Recovery Biomass Recovery When killed, your units have a 50% chance to drop all their Biomass.
New Unit: Viper New Unit: Viper Flying caster. Able to manipulate battlefield conditions. Can use Parasitic Bomb, Consumption, Disabling Cloud, and Abduct abilities.

Can attack air units.
Infestation Pit Upgrade Cache Infestation Pit Upgrade Cache Unlocks the following upgrades at the Infestation pit:
  • Unlock the Swarm host's Deep Tunnel ability, which allows it to quickly burrow to a target location.
  • Unlock the Viper's Paralytic Barbs ability, which increased the stun duration of Abduct.
Symbiote Symbiote Brutalisks and Leviathans gain Symbiotes that follow them, attacking enemies and protecting their host with a damage absorbing shell.
Spire Upgrade Cache Spire Upgrade Cache Unlocks the following upgrades at the Spire and Greater spire:
  • Increase the Guardian attack range.
  • Enable the Devourer's attacks to deal area damage.
  • Upgrade the Mutalisk's attacks to deal 100% bonus damage to armored units.
Mutagenic Potential Mutagenic Potential Ravager, Guardian, Devourer morph times and resource costs reduced by 50%.
Locust Injection Locust Injection Enemy units have a chance to spawn friendly Locusts upon death.
Roach Evolution: Vile Roach Evolution: Vile Upgrades Abathur's Roaches to the Vile Strain.

Assault unit. Regenerates life quickly while burrowed. Attacks debilitate the target, slowing its attack and movement speeds.

Can attack ground units.
Biotic Leech Biotic Leech Abathur's units heal themselves for 1% of the damage they deal per stack of Biomass they possess.

Highlighted rows denote large power spikes for the commander.

Achievements

The commander-specific achievements for Abathur are:

Achievement Name Description
Big Game Big Game Deal 500,000 damage with Brutalisks or Leviathans in Co-op Missions.
Morphology Morphology Morph 50 Ravagers, Devourers, or Guardians in a single mission on Hard difficulty.
Symbiosis Symbiosis Heal 50,000 life on allied units with Abathur's Mend in Co-op Missions.
Toxicity Toxicity Deal 25,000 damage with Toxic Nests on Hard difficulty in Co-op Missions.

Calldowns

The calldowns for Abathur, at level 15, with no mastery points added are:

Calldown Name Description Recommended Usage Numbers
Spawn Toxic Nest Spawn Toxic Nest Spawns a Toxic Nest that generates creep at the select location. Deals damage and slows when enemies walk over them. Enemies killed with Toxic Nests drop additional biomass. Toxic Nests have a chance to respawn.
  • Spawn toxic nests at the start of the game and lure enemies with a roach or spore crawler into them to get your first ultimate evolution up.
  • Place Toxic Nests over enemy spawn locations to instantly kill attack waves.
  • Put Toxic Nests in paths of attack waves to weaken them.
  • Place one Toxic Nest between your expansion's rocks and mineral patch so that two spine crawlers can be placed to clear the rocks.
  • Coolup: 5 charges to start
  • Cooldown: 20 seconds
  • Max Charges: 5
  • Spawn Time: 15 seconds
  • Damage: 125
  • Mov. Spd. Slow: 75%
  • Atk Spd. Slow: 75%
  • Slow Duration: 5 seconds
  • Respawn Chance: 60%
  • Additional Biomass: 50%
Mend Mend Heal all allied units and structures instantly and provides a heal over time for a small period of time.
  • Useful when taking long engages or when trying to push consistently on maps.
  • Coolup: 3 charges to start
  • Cooldown: 120 seconds
  • Initial heal: 100HP
  • Gradual heal: 50HP
  • Heal duration: 10 seconds

Note: Biomass drops at a rate of 2.5 biomass per supply of unit killed.

Masteries

Below are the three Power Sets for Abathur with the recommended point allocations for each. Note that these are meant to serve a general, all-purpose build that is effective across all maps. You are highly encourged to change these masteries to suit your playstyle and particular challenges you face (e.g. Weekly Mutations).

Power Set 1:

Power Value Recommended Points to Add Further Considerations
Toxic Nest Damage 2% per point
60% maximum
30 Points can be added to Mend Healing Duration if you would like to get more out of the healing and find it is useful. A possible optimization that can be made is to use the Toxic Nest Damage to 1-shot up to a particular unit and then put the remaining points into the Mend Healing Duration mastery.
Mend Healing Duration 10% per point
300% maximum
0

Toxic Nest Damage is generally the better choice for an all-round build. Since Queens can fill the role of healing with Abathur, all points should be added to Toxic Nest Damage.

Power Set 2:

Power Value Recommended Points to Add Further Considerations
Symbiote Ability Improvement 3.33% per point
99.9% maximum
30 The Double Biomass Chance mastery can allow you to get your Ultimate Evolutions faster. It also gives you max biomass units faster, which can be incredibly powerful. If you find you struggle with biomass, putting some points into this mastery might help.
Double Biomass Chance 1% per point
30% maximum
0

By playing efficiently, biomass should never be a problem. Additionally, biomass is critical at the early stages in the game as you get your Ultimate Evolutions out, after which they can handle the mission fine. With effective usage of Toxic Nests, you should have more than enough biomass to get your first Ultimate Evolution out and snowball the game.

Power Set 3:

Power Value Recommended Points to Add Further Considerations
Toxic Nests Maximum Charges and Cooldown 1 per point
30 maximum
15 There should always be a split between these two unless you find you're lacking Toxic Nests. The best way is to find a balance between the cooldown and charges of Toxic Nests and your playstyle.
Structure Morph and Evolution Rate -2% per point
-60% maximum
15

Having more Toxic Nests available to you is good, which is why points are added in the first mastery. However, at max level, the Toxic Nest charges you get are way too high to be used efficiently, and so, the other mastery is used to spend the remainder of points.

Combat Units

For more information on unit stats, comparison between units and upgrade calculations, visit the Data Tables page.

Abathur's combat units are listed below:

Roach

Roach

  • They can sometimes be used effectively on infested maps with the Hydriodic Bile upgrade which will increase its damage against light targets.
  • Use these to produce your brutalisks due to their low mineral cost.
  • Roaches can be used to lure early attack waves into Toxic Nests.
  • When fully upgraded, max biomass roaches can have up to 15 armour (1 base, 3 from upgrades, 5 from biomass, 6 from Adaptive Plating).

Skills: None

Upgrades:

Upgrade Name Effect Minerals/Gas Research Time
Glial Reconstitution Glial Reconstitution Increases the movement speed of Roaches by 33%. 100/100 110 seconds
Tunneling Claws Tunneling Claws Enables Roaches to move while burrowed. Increases the life-regeneration rate of burrowed Roaches by 5. 100/100 110 seconds
Hydriodic Bile Hydriodic Bile Roach gains +8 damage vs. light units. 100/100 110 seconds
Adaptive Plating Adaptive Plating Roach gains +6 armor when life is under 50%. 100/100 110 seconds
Ravager

Ravager

  • Morphed from Roaches.
  • Ravagers can be used to snipe cloaked units if you don't have detection.
  • Very large and can sometimes body-block a ground army.
  • Generally not recommended to mass them.
  • Ability should be bound to Rapidfire.

Skills:

Skill Name Description Cooldown Energy Cost
Corrosive Bile Corrosive Bile Launch a missile at the target location, dealing 60 damage to all units in the area upon impact.

Can destroy Protoss Force Fields.
10 seconds 0

Upgrades:

Upgrade Name Effect Minerals/Gas Research Time
Bloated Bile Ducts Bloated Bile Ducts Ravager Corrosive Bile impact size is increased by 100%. 150/150 90 seconds
Potent Bile Potent Bile Ravager Corrosive Bile damage is increased by 20. 200/200 120 seconds
Swarm Host

Swarm Host

  • Powerful defensive unit.
  • Swarm hosts can also be used to push into enemy defenses.
  • Deep Tunnel will give them mobility to intercept attack waves.
  • Due to high gas costs and short locust life, massing them is usually not viable.
  • They are extremely effective on defensive maps.
  • Micro will be required, as they hold a higher aggro priority to their locusts.

Skills:

Skill Name Description Cooldown Energy Cost
Spawn Locusts Spawn Locusts Sends Locusts to target location. 15s 0
Deep Tunnel Deep Tunnel Quickly burrow to a target visible location. 30 seconds 0

Upgrades:

Upgrade Name Effect Minerals/Gas Research Time
Pressurized Glands Pressurized Glands Locusts can attack both ground and air units. 200/200 120 seconds
Deep Tunnel Deep Tunnel Allows Swarm Hosts to quickly burrow to any visible location on the map. 200/200 120 seconds
Mutalisk

Mutalisk

  • Should be the core unit in Abathur's army composition.
  • Extremely weak without biomass.
  • Maxed biomass mutalisks can wipe entire attack waves of clumped up units.

Skills: None

Upgrades:

Upgrade Name Effect Minerals/Gas Research Time
Rapid Regeneration Rapid Regeneration Mutalisks regenerate life quickly while out of combat. 150/150 60 seconds
Vicious Glave Vicious Glave The Mutalisk's attack bounces three additional times, hitting up to six targets. Bounces also travel farther. 150/150 90 seconds
Sundering Glave Sundering Glave Mutalisks deal 100% bonus damage vs. armored units. 200/200 120 seconds
Guardian

Guardian

  • Morphed from Mutalisks.
  • Anti-ground siege unit.
  • Guardians have long rage, but lower DPS than mutalisks.
  • Useful on defensive maps.

Skills: None

Upgrades:

Upgrade Name Effect Minerals/Gas Research Time
Prolonged Dispersion Prolonged Dispersion Guardian attack range is increased by 3. 200/200 90 seconds
Devourer

Devourer

  • Morphed from the mutalisk.
  • Anti-air unit.
  • Corrosive Spray upgrade upgrades its attack to an AoE, which can devastate air compositions.

Skills:

Skill Name Description Cooldown Energy Cost
Corrosive Acid Corrosive Acid Launches acid at all enemy units in the target area, reducing their attack speed by 12.5% and armor by 3. Stacks 3 times. 45s 0

Upgrades:

Upgrade Name Effect Minerals/Gas Research Time
Corrosive Spray Corrosive Spray Devourer attacks will now deal area damage. 200/200 90 seconds
Viper

Viper

  • Crowd-control unit.
  • Disabling cloud is a powerful ability to disable enemy ground units.
  • Abduct can be used to pull Siege tanks, Carriers and other large units into your army to be focus-fired.
  • Parasitic Bomb ability is not as effective as using Devourers for anti-air.
  • Virulent Microbes ability is a must-get to increase Viper range.
  • Disable automatic evolution to prevent Vipers from evolving into Leviathans, wasting valuable gas.

Skills:

Skill Name Description Cooldown Energy Cost
Abduct Abduct Pulls target unit to the Viper. Enemy is stunned for 1 second. 0 seconds 25
Disabling Cloud Disabling Cloud Creates a cloud that slows movement speed and prevents enemy units and structures from attacking and using energy-based abilities. Lasts for 10 seconds. 0 seconds 75
Consumption Consumption Drains up to 75 life from a friendly Zerg unit and gives the Viper 2 energy for each point of life drained. 0 seconds 0
Parastic Bomb Parastic Bomb Creates a parasitic cloud of radius 3 that deals 90 damage over 10 seconds to the target and enemy air units nearby. If the target dies, the cloud remains in the air where the enemy died until it expires.

Cannot target ground units or structures.
0 seconds 125

Upgrades:

Upgrade Name Effect Minerals/Gas Research Time
Virulent Microbes Virulent Microbes All Viper abilities gain +4 cast range. 50/50 60 seconds
Paralytic Barbs Paralytic Barbs Viper Abduct stuns units for an additional 5 seconds. 150/150 60 seconds
Swarm Queen

Swarm Queen

  • Does not have movement speed penalty of creep.
  • Can provide healing support for your army.

Skills:

Skill Name Description Cooldown Energy Cost
Spawn Creep Tumor Spawn Creep Tumor A burrowed creep generator. Creep feeds nearby Zerg structures. A Creep Tumor can spawn additional Creep Tumors.

Bonus: Zerg move faster on creep.
3s 0
Rapid Transfusion Rapid Transfusion Heals a biological unit or structure for 25 life over time. 3s 10

Upgrades:

Upgrade Name Effect Minerals/Gas Research Time
Bio-Mechanical Transfusion Bio-Mechanical Transfusion Increases the healing of the Swarm Queen's Rapid Transfusion by 10 and allows it to heal mechanical units and structures. 100/100 60 seconds
Incubation Chamber Incubation Chamber Allows Hatcheries, Lairs and Hives to birth two Swarm Queens simultaneously. 100/100 60 seconds
Brutalisk

Brutalisk

  • Powerful ground Ultimate Evolution.
  • Evolves from ground units. Recommended to evolve from roaches.
  • Frontal cleave attack is splash, which can be effected to clear swarms of enemies.
  • Vulnerable to units that deal extra damage to armoured units like Immortals.
  • Deep Tunnel ability only has a 10-second cooldown which gives Brutalisks extremely good mobility even without vision.

Skills: None

Upgrades: None

Leviathan

Leviathan

  • Powerful air Ultimate Evolution.
  • Evolves from air units. Recommended to evolve from mutalisks.
  • Due to tech requirements, it is recommended to get Brutalisks first.

Skills: None

Upgrades: None

Build Order

Below is the standard economic build order for Abathur. For more information on how to read and construct your own build orders, please check the Build Order Theory page.

14 Overlord
17 Roach Warren
20 Spine Crawler
19 Spine Crawler
18 Extractor
17 Extractor
20 Roach
22 Overlord
22 Hatchery
22 Extractor
22 Extractor

Gameplay Guide

Playstyle Traps

A common trap for Abathur players is to go for a mass Roach build. While Roaches can potentially reach 15 armour, they do not deal a lot of damage and can have a lot of trouble dealing with attack waves and objectives.

Additionally, the mass Roach build cannot deal with air units, causing players to resort to converting some Roaches to Ravagers. Ravagers cannot effectively deal with air unit due to the relative targeting inaccuracy of Corrosive Bile.

Biomass Effects

Units can collect Biomass drops (up to a maximum of 100) to become stronger. The effects of 100 Biomass are shown below for each of Abathur's units:

Unit Max Biomass Effect
Roach 300% Life
100% Attack Speed
500% Armor
100% Biotic Leech
Ravager 300% Life
100% Attack Speed
100% Biotic Leech
Swarm Host 300% Life
100% Attack Speed
100% Biotic Leech
Mutalisk 300% Life
100% Attack Speed
100% Biotic Leech
Guardian 300% Life
100% Attack Speed
100% Biotic Leech
Devourer 300% Life
100% Attack Speed
100% Biotic Leech
Viper 300% Life
100% Attack Speed
100% Biotic Leech
500% Energy Regeneration
Swarm Queen 300% Life
100% Attack Speed
100% Biotic Leech
500% Energy Regeneration

Toxic Nest Usage

When Toxic Nests are placed on the ground, they detonate as soon as enemy units touch them. This is sometimes suboptimal and it may be worth setting up a few nests to manual detonation by right-clicking the Detonate ability. The reason is shown below.

When a stream of enemies run towards a nest, the nest will detonate when the first one (the one leading the group) touches the nest, as shown below:

Before automatic detonation of Toxic Nest

The result is a highly reduced amount of biomass gained, because only a few units are killed and not all of the Nest's Area of Effect is utilized. Additionally, the units in the attack wave may still be alive.

After automatic detonation of Toxic Nest

A more efficient use of the Toxic Nest is to detonate it when the attack wave is in the middle of the nest. This maximizes the damage of the nest.

Before manual detonation of Toxic Nest

The result is significantly more biomass obtained. It is possible to wipe out small attack waves with a single nest.

After manual detonation of Toxic Nest

Playstyle Tips