Zerg Ground Carapace Level 1
Upgrades the armor of all Zerg ground units.
Zerg Ground Carapace Level 2
Further upgrades the armor of all Zerg ground units.
Zerg Ground Carapace Level 3
Maximizes the armor of all Zerg ground units.
Enables all Zerg ground units to use the Burrow ability. Burrow allows a unit to take cover underground, rendering it unable to attack. A burrowed unit is invisible unless revealed by detectors or effects.
Orders Drone to gather resources from a selected Mineral Field or Vespene Geyser.
Buries the unit underground. Burrowed units are unable to move or attack, but they cannot be seen without detection.