Zerg Melee Attacks Level 1
Upgrades all Zerg melee attacks.
Zerg Melee Attacks Level 2
Further upgrades all Zerg melee attacks.
Zerg Melee Attacks Level 3
Maximizes all Zerg melee attacks.
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.
Gives +2 armor to Ultralisks.
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.
Buries the unit underground. Burrowed units are unable to move or attack, but they cannot be seen without detection.
Immune to snare, stun, and mind control effects.