The following section contains information from a previous version of StarCraft II which is no longer valid.
The sentry was previously known as the stasis orb. The Force Field[1] and Anti-Gravity[2] abilities were used by the high templar in earlier builds of StarCraft II. Anti-Gravity was later moved to the Phoenix.[3]
In earlier builds, Anti-Gravity could affect destructible doodads,[4] but this was a bug.[5]
Sentries dealt bonus damage against biological units.[6]
Earlier builds featured an ability called Null Void.
Null Void
Ability Cost: 50
Prevents any unit caught in the target area from using abilities[7] that cost energy.[8] It does not affect abilities such as a stalker's Blink, a carrier's Build Interceptor, a Phoenix's Overload or an SCV's Repair.[9] Immediately upon exiting a field a unit can use its powers like normal.[10]
Nullify acts as a detector,[9] decloaking units such as ghosts and dark templar and revealing burrowed units.[11] The ability to detect cloaked and burrowed units was being subjected to balance testing.[8]
As of February 2009 the nullifier lost the Molecular Disruption ability.[12]
Molecular Displacement
The nullifier fires a psionic projectile which bounces between units of the same type, to a maximum of 10 bounces. (It deals 10 damage per "bounce"; 100 damage in total.) It can strike a single unit more than once.[13]
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In one of our Battle Report considered replays, I have actually seen 2-3 Nullifiers brought straight into the enemy resource line, then all exits force fielded so the enemy drones couldn't get out, and the Nullifiers pretty much killed a large amount of them easily since they get bonus biological damage. Karune. 2009-05-01. Worker harassment with Nullifiers. Battle.net StarCraft II General Discussion Forum. Accessed 2009-05-01.
↑Mothership has currently Time Bomb, Vortex and Cloaking Field abilities. Cloaking Field as a passive ability cloaks ground units and structures nearby Mothership. Archon does not have energy and energy-dependent ability.
Nullifier currently has Force Field and Hallucination abilities. Cydra. 2009-02-19. Cavez: quick questions. Battle.net StarCraft II General Discussion Forum. Accessed 2009-02-19.
↑ 13.013.1The Molecular Disrupter is a new ability we are testing out on the Nullifier, in which the unit fires a psionic projectile which bounces between units of the same type, doing 10 damage with each hit, up to a maximum of 10 bounces. Thus, if you were to use this ability on 2 Marines (with 40 hit points each, not upgraded), both Marines would die easily. If there were 3 Marines, it would kill 1 Marine and leave the last two at 10 hp each. Currently, the ability costs 125 energy. Karune. 2008-10-20. Karune: Molecular Displ. & Seismic Thumper?Battle.net StarCraft II General Discussion Forum. Accessed 2008-10-20.