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Shakurus SC1 Art2
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"Ah, this faithful Observer has kept watch since the evacuation. Its abilities will certainly prove useful now."

The observer reprises its role as a stealthy detector.

Game Unit[]

Versus[]

Upgrades and Abilities

Increases protoss air unit armor.

Acquisition
Purchased from Cybernetics Core
Hotkey A
Level 1
Cost 100 Minerals 100 Vespene gas 129seconds
Level 2
Cost 175 Minerals 175 Vespene gas 154seconds
Required Fleet beacon
Level 3
Cost 250 Minerals 250 Vespene gas 179seconds
Required Fleet beacon
ve
  • +1 armor to shields per level.
Acquisition
Purchased from Forge
Hotkey S
Level 1
Cost 150 Minerals 150 Vespene gas 121.6seconds
Level 2
Cost 200 Minerals 200 Vespene gas 144.6seconds
Required Twilight council
Level 3
Cost 250 Minerals 250 Vespene gas 167.9seconds
Required Twilight council
ve
GraviticBooster SC2 Game1
Gravitic Boosters
  • Increases observer movement speed by 1.31.
Acquisition
Purchased from Robotics bay
Hotkey B
Cost 100 Minerals 100 Vespene gas 57seconds
ve

This unit or structure can detect cloaked, burrowed, duplicated and hallucination enemies.

ve
ObserverCloaking SC2 Icon1
Permanent Cloaking

This unit is permanently cloaked. They cannot be seen or directly attacked by enemy forces, unless they have detector support.

ve
Observer SC2 Icon
Surveillance Mode

The observer can switch to Surveillance Mode. In Surveillance Mode the observer is immobile and gains 50% increased sight radius. Can switch back to Observer Mode to move again.

Usage
Hotkey E (Surveillance Mode)
T (Observer Mode)
Cost 3 seconds
ve

Legacy of the Void[]

The observer is not available during the campaign; detection is never required.

Co-op Missions[]

Artanis, Karax, and Fenix, are able to build observers in Co-op Missions. In Patch 3.1, Artanis's observers gained the Surveillance Mode ability.

Zeratul uses a variant of the observer called the Xel'naga watcher.

Artanis Upgrades and Abilities

This unit or structure can detect cloaked, burrowed, duplicated and hallucination enemies.

ve
ObserverCloaking SC2 Icon1
Permanent Cloaking

This unit is permanently cloaked. They cannot be seen or directly attacked by enemy forces, unless they have detector support.

ve
Observer SC2 Icon
Surveillance Mode

The observer can switch to Surveillance Mode. In Surveillance Mode the observer is immobile and gains 50% increased sight radius. Can switch back to Observer Mode to move again.

Usage
Hotkey E (Surveillance Mode)
T (Observer Mode)
Cost 3 seconds
ve
GraviticBooster SC2 Game1
Gravitic Boosters

Increases observers movement speed.

Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Robotics bay
Hotkey B
Cost 50 Minerals 50 Vespene gas 60seconds
ve
SC2 ProAirArm
Protoss Air Armor

Increases the armor of protoss air units.

Usage
Passive
Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Cybernetics core
Hotkey G
Level 1
Cost 100 Minerals 100 Vespene gas 160seconds
Effect Armor: 1
Level 2
Cost 175 Minerals 175 Vespene gas 190seconds
Required Fleet beacon
Effect Armor: 2
Level 3
Cost 250 Minerals 250 Vespene gas 220seconds
Required Fleet beacon
Effect Armor: 3
ve
SC2 ProShields
Protoss Plasma Shields

Increases the shield armor of all protoss units and structures.

Usage
Passive
Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Forge
Hotkey A
Level 1
Cost 100 Minerals 100 Vespene gas 160seconds
Effect Shield armor: 1
Level 2
Cost 175 Minerals 175 Vespene gas 190seconds
Required Twilight council
Effect Shield armor: 2
Level 3
Cost 250 Minerals 250 Vespene gas 220seconds
Required Twilight council
Effect Shield armor: 3
ve
Karax Upgrades and Abilities

This unit or structure can detect cloaked, burrowed, duplicated and hallucination enemies.

ve
ObserverCloaking SC2 Icon1
Permanent Cloaking

This unit is permanently cloaked. They cannot be seen or directly attacked by enemy forces, unless they have detector support.

ve
Observer SC2 Icon
Surveillance Mode

The observer can switch to Surveillance Mode. In Surveillance Mode the observer is immobile and gains 50% increased sight radius. Can switch back to Observer Mode to move again.

Usage
Hotkey E (Surveillance Mode)
T (Observer Mode)
Cost 3 seconds
ve
GraviticBooster SC2 Game1
Gravitic Boosters

Increases observers movement speed.

Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Robotics bay
Hotkey B
Cost 50 Minerals 50 Vespene gas 60seconds
ve
SC2 ProAirArm
Protoss Air Armor

Increases the armor of protoss air units.

Usage
Passive
Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Cybernetics core
Hotkey G
Level 1
Cost 100 Minerals 100 Vespene gas 160seconds
Effect Armor: 1
Level 2
Cost 175 Minerals 175 Vespene gas 190seconds
Required Fleet beacon
Effect Armor: 2
Level 3
Cost 250 Minerals 250 Vespene gas 220seconds
Required Fleet beacon
Effect Armor: 3
ve
SC2 ProShields
Protoss Plasma Shields

Increases the shield armor of all protoss units and structures.

Usage
Passive
Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Forge
Hotkey A
Level 1
Cost 100 Minerals 100 Vespene gas 160seconds
Effect Shield armor: 1
Level 2
Cost 175 Minerals 175 Vespene gas 190seconds
Required Twilight council
Effect Shield armor: 2
Level 3
Cost 250 Minerals 250 Vespene gas 220seconds
Required Twilight council
Effect Shield armor: 3
ve
Fenix Upgrades and Abilities

This unit or structure can detect cloaked, burrowed, duplicated and hallucination enemies.

ve
ObserverCloaking SC2 Icon1
Permanent Cloaking

This unit is permanently cloaked. They cannot be seen or directly attacked by enemy forces, unless they have detector support.

ve
Observer SC2 Icon
Surveillance Mode

The observer can switch to Surveillance Mode. In Surveillance Mode the observer is immobile and gains 50% increased sight radius. Can switch back to Observer Mode to move again.

Usage
Hotkey E (Surveillance Mode)
T (Observer Mode)
Cost 3 seconds
ve
GraviticBooster SC2 Game1
Gravitic Boosters

Increases observers movement speed.

Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Robotics bay
Hotkey B
Cost 50 Minerals 50 Vespene gas 60seconds
ve
SC2 ProAirArm
Protoss Air Armor

Increases the armor of protoss air units.

Usage
Passive
Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Cybernetics core
Hotkey G
Level 1
Cost 100 Minerals 100 Vespene gas 160seconds
Effect Armor: 1
Level 2
Cost 175 Minerals 175 Vespene gas 190seconds
Required Fleet beacon
Effect Armor: 2
Level 3
Cost 250 Minerals 250 Vespene gas 220seconds
Required Fleet beacon
Effect Armor: 3
ve
SC2 ProShields
Protoss Plasma Shields

Increases the shield armor of all protoss units and structures.

Usage
Passive
Campaign Acquisition
Unlock Initially available.
Acquisition
Purchased from Forge
Hotkey A
Level 1
Cost 100 Minerals 100 Vespene gas 160seconds
Effect Shield armor: 1
Level 2
Cost 175 Minerals 175 Vespene gas 190seconds
Required Twilight council
Effect Shield armor: 2
Level 3
Cost 250 Minerals 250 Vespene gas 220seconds
Required Twilight council
Effect Shield armor: 3
ve

Development[]

The following section contains information from a previous version of StarCraft II which is no longer valid.

In a September 2008 build of StarCraft II, the observer did not require an observatory to build, making it available earlier in the tech tree than in StarCraft. It was upgraded at the null circuit.[1]

The observer's surveillance mode ability was introduced to offset how observers were often sent alongside the rest of a protoss army with the use of the "F2" command when the player wanted them to remain in place.[2]

Images[]

Skins
Portraits

References[]

  1. Karune. 2008-09-05. StarCraft II Q&A - Batch 44. Battle.net StarCraft II General Discussion Forum. Accessed 2008-09-05.
  2. 2017-08-17, StarCraft II Multiplayer - Major Design Changes. Blizzard Entertainment, accessed on 2017-08-20.
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