Devouring One by Rorus Raz

Cooldown: 5 Seconds
5 Biomass

While weak individually, zerglings are fearsome in large numbers. When used, this will use biomass to spawn one additional zergling at the Pack Leader's location. Biomass is earned by using abilities or killing minions (1 Biomass) and heroes (5 Biomass). Up to ten zerglings can be on the field at one time. A zergling only counts as a tenth of a hero death, and does not count as a hero for the purposes of objectives and experience gain.

Cooldown: 12 Seconds

The zergling leaps at an enemy, dealing 10 (+2 per level) damage.

Cooldown: 10 Seconds

The zergling bites the target, dealing 12 (+3 damage per level) damage and gaining two biomass.

Cooldown: 5 Seconds

The zergling burrows, gaining stealth. While burrowed, the zergling cannot move or attack, and has only 50% of normal vision. Using abilities cancels burrow.

Cooldown: 30 Seconds

Selected zergling becomes the Pack Leader, gaining 100% more HP and dealing 25% more damage. New zerglings will spawn at the Pack Leader. If there was another Pack Leader, it loses Pack Leader. The Pack Leader counts as a hero for the purposes of taking objectives and gaining experience. The cooldown is reset when the Pack Leader dies.

Turns the zergling into a Baneling. Instead of a normal attack, a Baneling will explode, dealing 100 (+20 per level) damage and destroying the Baneling.

Cooldown: 80 Seconds

Increase the attack speed of all zerglings by 50%, and their movement speed by 40% for eight seconds.

Cooldown: 30 Seconds

Increases the speed of all zerglings by 30% for five seconds.