Overlord

Master Offensive Carry. Quick refference Opening Build:

Plague Opening build [1]  : The only vitable build as a overlord.

Synergize with: Arbiter, Collosus. Leviathen, Dreadnought.

Countered by: Guardian, Carier, Raven, Collosus.

Core Upgrades
Swarm Command

Cost 250 minerals. Passive upgrade.

The mutalisk (+2:06), coruptors (+5:40) and broodlords (+8:24) will start independly from each other. Depends on when you buy it.

Release Mutalisks [R]

''' Trait Toggle. ' Range'' 16 (+1 each range upgrade).

Launch up to 10 mutalisks towards target area. Dealing 12 (+2 Basic upgrades) damage to the closest enemy Ship each 2.5 secconds. Those Basic upgrades also affects the hull 60 (+3), the armour 0 (+0.5) and increases the retarget system by 1+.

Antennae

Cost 150 minerals. Passive upgrade.

Increases the sight radius of the Overlord by +10 and also increases the radius of Siphon by +3.

Pneumatized Carapance

Cost 125 minerals. Passive upgrade.

Increases the movement speed of Mutalisks by 20% and allows the Overlord to release quicker it's mutalisks.

Plague Extension

Cost 100 minerals. Passive upgrade.

Increases the hit radius by +1. Increases the casting range by +1. Increases the energy cost by +50. Increases the damage by 400.

Psi Blast [B]

Cost 175 minerals. Target Muke. Cast 100 Energy, Range 10 (+1 basic range upgrades), Cooldown 5 seconds.

Launch a Blast that deals 750 (+80 for each basic upgrade) Deals 500 extra damage to Shield and Biological targets.

Syphon [Y]

Cost 200 minerals. Target Debuff. Cast 125 Energy, Range 8 (+3 with Attenae upgrade) Duration 10 seconds, Cooldown 10 seconds.

Drains 30 energy per seccond to a maximum of 300. The overlord gains 75 energy of the drained energy.

Contaminate [C]

Cost 175 minerals. Target Area Debuff. Cast 100 Energy, Range 9 (+1 basic upgrades) Duration 20 seconds, Cooldown 30 seconds.

Slows down all enemy unit attack speed by 50% of the targeted area. it also brings a small ammount of damage to the target.