Increase lifespan of Corruptor's corrupted units

Allowed Corruptors to corrupt an enemy air unit and turn it into a stationary turret

Enables Infestors to taint structures, disabling them for 20 seconds and spawning infested units from them

Causes enemies killed by Fungal Growth to erupt into another Fungal Growth

Enables the Queen to "poison" a small area of creep, injuring enemy units & structures over that creep. Deals 3 damage per second.

Infestor creates a smokescreen for units to hide under, protecting them from ranged attacks. 

Infestor ability infests a single non-massive unit, causing it to take damage until it dies explosively (causing splash damage to nearby units). 

Increases infestor speed while burrowed.

Increases Infestor starting energy by 25

Infestor brings a target enemy air unit to the ground, allowing units to attack it as if it were a ground unit. 

Temporarily disables the target's attack and cloak. 

Infestor area of effect attack that reduces opponents hit points by 95% in ten seconds, does not kill

Infestor gains Defilers Plague ability

Allows Infestor to infest selected Protoss building

Overseer drops a non-attacking slime creature, temporarily disabling resource nodes and xel'naga towers. The slime can be attacked and removed by other forces. 

The Overseer can create a Nydus Worm on a patch of creep. 

Requires a finished Nydus Network

When selected, the Overseer will create Zerg creep beneath it. 

The Overseer can create a Spore Cloud, which covers an area, blocking line of sight for a period of time. Units above the fog can see over and into it.

The Overseer can create acid spores on a selected unit which increases damage taken by enemy units by 5. 

The Infestor targets a single unit or structure (even flying ones), draining it of 4 hit points per second and gaining half that back in energy. The ability is channeled and can be autocasted. 

The Infestor targets a single biological unit which deals 25% more damage and is immune to snare, stuns, and mind control for 30 seconds. 

Infestor spawns an Infested Swarm Egg, which takes 5 seconds to hatch and has 70 health. An Infested Terran has 50 health, lives for 30 seconds and has a ranged attack 

The Ultralisk performs a powerful attack against structures. The attack deals 75 (+5) damage with a cooldown of 1.67. 

Gives the Ultralisk splash damage

Increases the range of Ravagers corrosive bile to to 13. It cost 100 minerals and Vespene gas. This required a lair. 

Transforms Queen into Large Queen

Transforms Large Queen into Huge Queen

Queens can target a Hatchery/Lair/Hive, instantly producing three Morphalisks. When Morphalisks mutate into Zerg units, there is a production time discount.

The Huge Queen can temporarily alter structures in a small area of effect to grow organic turrets and attack enemy units.

The structures are surrounded by small colored "flies".

Hydralisks move 25% faster off creep. Requires a Lair. 

Increases the range of the Lurkers attack from 6 to 9, giving it siege range. 

Greatly increases Roach regeneration by +10 hit points per second.

Roaches gain a +2 bonus to damage. 

Increased Mutalisk maximum life by 35 

Gives the Mutalisk +1 armor 

Roaches transform into Leeches or Prowlers; once the choice is made, it cannot be reversed. 

Increase Ultralisk attack speed

Increase Zergling base damage by 20%

Banelings can evolve into either Gorgelings or Splitterlings; once the choice is made, it cannot be reversed. 

Zergling has a 20% chance to spawn 2 Broodlings on death. 

Zerglings train instantly

Baneling acid slows move speed of all units hit for a short period of time. 

Roaches gain +1 to armor

The Viper grants detection to an allied non-massive unit

Allows Queen (flying variant) to create a Creep Tumor

Queen (flying variant) Infects target enemy biological unit with a parasite that grants the player shared vision with that unit. 

Devourer can attack ground units 

Devourer's attack speed increases by 25% 

Acid Spore debuff lasts twice as long 

Kerrigan corruption ability. Kills an enemy unit. Massive and Heroic units are immune. Instantly spawns 5 Broodlings from the corpse. 

Units in the target area take +3 damage per hit. 

Deals damage to all targets and stuns them for 3 seconds. 

Kerrigan creates a Psionic Shadow of herself that deals half damage. They have full health, and Kerrigan can have multiple shadows at a time. 

Grants Kerrigan an additional maximum of 50 energy. 

The Queen breathes out a giant cloud of dust and insects which can be controlled. They deal damage to enemy units, including air units, and extra damage to biological units, without injuring friendly units. The swarm eventually exhausts itself.