From Liquipedia StarCraft 2 Wiki

The attribute Psionic was initially just a flavor element. But after Patch 1.4.3, it became important since the Sniper Round ability of Ghosts had additional damage to Psionic units. In Legacy of the Void, since the Ghost lost the ability in exchange for Steady Targeting, Psionic came back to being a flavor attribute. In Patch 4.0.0, Psionic yet again stopped being a flavor attribute with the introduction of Interference Matrix.

Psionic Units[edit]

Units in Starcraft II are tagged with one or more Attributes that determine bonus damage, affect targeting, and/or can influence spells and abilities.

The Psionic units, categorized by race, are listed below.


Heart of the Swarm[edit]



Heart of the Swarm[edit]

Negative Spells and Abilities[edit]

After Patch 1.4.3, the following ability was more effective against units with the attribute Psionic.

Range: 10
Duration: 0.5 s
Damage: 25(+25 vs psionic)
Hotkey: R
The Ghost snipes a single, biological unit for 25(+25 vs psionic) damage. This ability can be queued for multiple snipes.

As Sniper Round was replaced by Steady Targeting in Legacy of the Void, Psionic no longer had an effect on any ability.

After Patch 4.0.0, the following new ability affects units with the attribute Psionic.

Interference Matrix
Duration: 7.9 s
Hotkey: C
Disables a target unit rendering it unable to attack or use abilities for 7.9 seconds. Reveals Cloaked units. Can only target mechanical and psionic units.


  • In Wings of Liberty, Kerrigan was labelled as a Class 12 Psionic waveform according to the Terran adjutant in the mission "All-In". However, in one of the released Heart of the Swarm screen shots, she was labelled as a Class 11 Psionic.