The Zerg Swarm - Units and Structures

Greater Spire

You may upgrade your Spire to this much tougher structure for a substantial cost immediately after you upgrade your Lair to a Hive. The Greater Spire empowers your Mutalisks with the ability to transform into Guardians, a gradual, expensive, and irreversible process that turns the all-purpose Mutalisks into slow yet lethal long-range Guardian bombers. Guardians are perhaps the single most deadly unit available to the Zerg, and the Greater Spire is a sound investment for this reason. The Greater Spire may otherwise be used to upgrade flier attack power and armor.

Hit Points	1,000
Time to Build	80
Cost	100m 150g
Requires	Hive
Special Options	Upgrade Flier Attack   Level 1 100m 100g Time 266   Level 2 200m 200g Time 298 Requires Hive   Level 3 250m 250g Time 330  Evolve Flier Carapace   Level 1 150m 150g Time 266   Level 2 225m 225g Time 298 Requires Hive   Level 3 300m 300g Time 330

Defiler Mound

This den of filth and disease makes a comfortable home for the malignant Zerg Defiler, the perfect support weapon for virtually any large-scale Zerg attack force. The Defiler Mound is inexpensive as are Defilers themselves, thus this structure is a worthy addition to your headquarters whether you intend to use Defilers extensively or not. You may quickly research two additional abilities for your insidious, new brood directly at the Mound. Of utmost importance is Plague, which coats everything in a targeted area in a highly acidic substance that rapidly eats away at flesh and metal alike. Consume lets the Defiler gorge on any of your forces and break them down to their component nutrients, thus restoring 50 points of energy. Otherwise, evolving the Metasynaptic Node increases a Defiler's energy capacity by 50 points, letting it use its powers with greater frequency. Defilers are most effective against Terrans, but they are useful against any opponent when deployed carefully. It is worth the effort to build a Defiler Mound when the opportunity arises, as Defilers can be devastating.

Hit Points	850
Time to Build	60
Cost	100m 100g
Requires	Hive
Special Options	Evolve Plague 200m 200g Time 80   Evolve Consume 100m 100g Time 80   Evolve Metasynaptic Node 150m 150g Time 166

Next: Ultralisk Cavern, Nydus Canal, and Infested Command Center