The Overmind by wowhelland

The idea behind the overmind is to gain a measure of control of the movement and position of regular lane minions in order to make it more difficult for the enemy to both benefit from killing said minions, as well as applying more pressure on the enemy by directing said minions where the enemy will have a harder time dealing with them.

In team fights, The overmind will be able to contribute damage by taking control of infested minions and deal basic attack damage without much fear of dying, as his controlled minion will only grant experience equivalent of regular minions. While its damage is about the same as other heroes, its health is very low, so this controlled unit should be a priority target for the enemy team despite the low reward for killing it. (think zagara's basic attacks and abathur's health).

The primary power of the overmind lies in its cerebrates. These cerebrates can only be placed in fixed location ever so often, so it's important to establish where important team fights or pushing will occur. While some of the contribution to fights will come from infested minions under the overmind's control, having a cerebrate's spine crawlers and zerglings nearby can help the team build a defensive parameter around said location.

Since the overmind can have two cerebrates up at the same time, it will be in an ideal position to split push while still contributing to a fight. Choose positions wisely though, as you can only despawn a cerebrate by either killing it, or intentionally run out of mana while burrowed, which can take some time.

Carapace Stinger: If the shield granted by Grow Carapace is removed before it runs out, X amount of damage will be dealt in an area around the unit.

Burrowed growth: Tunnel entrances, exits and cerebrates are stealthed for 15 seconds after they have been spawned unless interacted with by The Overmind or infested minions.

Healthy Evolution: All infested minions gain 10% more health.

Infectious Persuasion: For every minion killed by a spine crawler, zerg unit spawned by the overmind or controlled infested minion, The overmind gain a stack. Use 20 stacks to recruit a mercenary. stacks up to 50 times.

Spinal Swiftness: Spine Crawlers can uproot instantly and will only take 1 second to root itself again.

Tunnel-network expansion: Zerglings spawn burrowed and will move stealthed underground at 50% movement speed until they reach their target or take damage.

Cerebral outreach: The radius of cerebrate's range of influence is increased by 50%.

Cerebral rapidity: Evolve cerebrate now stacks up to 3 times and its cooldown is reduced to 45 seconds.

Evolved Specialist: The infested minions who drop health globes have their health increased by 400%, but deals no damage.

Duck and cover: Tunnels exits, entrances and cerebrates that are not being controlled by The Overmind will automatically burrow and be invulnerable to attacks for 10 seconds when taking damage. This effect can only occur once per unit.

Cerebral swiftness: The cast time to evolve a cerebrate is reduced to 1.5 seconds and the cooldown for reactivating control of a cerebrate after recently used is lowered from 4 seconds to 1.

More Energy: Reduce the cooldown of Energy burst by 20 seconds.

Explosive Carapace: If the shield granted by Grow Carapace is removed before it runs out, All enemies near the unit will be knocked back.

Spawning Pool: Spawn Zerglings can now stack up to 7 times and it's cooldown is reduced by 2 seconds.

Cerebral Illusion (Ability): The Overmind gains the ability to Place a dummy cerebrate that will look like a real one to the enemy, but with much lower health. This unit grants vision like a normal cerebrate.
Cooldown: 45 seconds.

Neural Network expansion: One additional Cerebrate can now be created.

Underground crawling: Rather than uprooting, spine crawlers burrow underground while moving to a new location.

Evolution Chamber: Infested minions that are being controlled by The Overmind gain 30% movement speed.

Lair: Infested minions that are being controlled by The Overmind will evolve into zerg units with ranged basic attacks.

Metabolic Boost: Zerglings will move 100% faster and attack 20% faster.

Miasmic build-up:
For every second an enemy is affected by Miasmic Emanation, they gain a stack of miasma up to 10 stacks. You can now activate your Miasmic Build-up to deal X amount of damage to the target unit for each stack it has accumulated.
Cooldown: 15 seconds

Evolution Complete:
While the brutalisk Shell is active the Cerebrate's basic attacks becomes ranged and its movement speed is increased by 30%.

Incubation (Ability):
Spawn two zerglings by killing one of your infested minions. The two zerglings have 100% of an infested minion's damage and health. Killing zerglings will not grant experience for the enemy team. Can be cast while controlling a cerebrate if the infested minion is within range.
Cooldown: 5 seconds.

Sunken Colony:
Every Cerebrate, Tunnel & Exit spawned by The Overmind gains an immobile spine crawler that attacks nearby enemies. Infested units near a cerebrate also regenerate health.

aerospace insertion strains (Ability):
A drop pod that will spawn 5 zerglings, 2 roaches and an Aberration lands at target location after 3 seconds cast time. These units will focus on the nearest enemy hero.
Cooldown: 60 seconds.