Devourer

The Devourer is a Zerg anti-air flyer.

Overview
Devourers are an evolution of the Mutalisk first encountered during the Brood War. Devourers spit a venom of corrosive acid at aerial targets that can eat through the reinforced armor plating of Terran and Protoss capital ships. A single spat of venom may splash over multiple targets. The acid spores in the venom may hinder the fighting ability of the target.

StarCraft
Devourers are the anti-air aspect of the Mutalisk. They are slower than Mutalisks but faster than Guardians.

The Devourer's attack has the additional effect of attaching "Acid Spores" to anything it hits. A unit affected by spores will be revealed (if cloaked), have its attack speed slowed by 1/8 per spore, and take 1 point of additional damage from every attack for every spore attached. A maximum of 9 spores may affect a target at any one time. Spores will disappear after a period of time.

Devourers have a very slow rate of fire, and the attack travels slowly. If a Devourer moves before the glob of acid strikes, the glob disappears.

The fast firing and bouncing attack of Mutalisks benefit greatly from the acid spores. Against a group of targets splashed with 9 spores a single Mutalisk can deal 40 instead of 13 damage per attack. This makes the Mutalisk effective against high armor targets, like Battlecruisers and Carriers, and able to go toe to toe with area-of-effect anti-air units like Corsairs and Valkyries. While Devourers are effective against air units, they have no ground attack watsoever and due to their large size, they are most easy to take down with Dragoons, Goliaths and cloaked Wraiths. Missile Turrets, Bunkers, Photon Cannons and Spore Colonies can spell trouble to devourers in defensive situation.

Upgrades

 * Flyer Attack
 * Flyer Carapace