Increases the Adept's shields by 50. 

After destroying a certain amount of enemy biological units, the Soul hunters attack splits into three powerful streams for 60 seconds 

Time Bomb slows down enemy unit movement and attacks in the area of effect. This ability has no effect on beam weapons. When the Time Bomb collapses, failed ammunition falls to the ground.   This ability was replaced with the Time Warp ability

Scorch the ground beneath the Mothership for 15 seconds, causing damage to enemy ground units below, has no effect on air units. 

This ability creates a black hole in the target location and will literally draw in enemy air forces into the hole causing them to disappear completely.  This ability was cut in favor of the Vortex ability.

Special attack that deals bonus damage over a short time to 8 Air units. After Overload finishes the unit will be disabled for 6 seconds

Causes both the Soul Hunter and target friendly unit to be immune to all conventional attacks for 30 seconds. Units are still vulnerable to damage from special weapons/abilities 

Mothership slows all movement speed, attack speeds and ability cast times by two thirds. 

Was called Time Rift, replaced by Time Warp

A Protoss ability, perhaps related to an earlier mechanic with the Gateways or used for High Templars to open locked doors

An unknown Protoss ability

Fan theory suggests that this may work similar to the Zerg Frenzy ability and grants Protoss units a significant increase in fighting stats.

A Protoss ability that granted the Dark Obelisk detection

A Protoss ability that grants the Dark Obelisk a defensive attack

Protoss Scout upgrade to make it go much faster

Enhances the Colossus shields

The Mothership Core teleports to another Nexus

Mothership Core recharges a unit's energy to full

The Mothership Core turns into a Mothership, costing 6 supply 

Mothership Core uses this ability on a Nexus, which gains a photon cannon-like weapon. The weapon has range 13, targets air and ground and deals 20 damage. The weapon lasts 60 seconds and has its own cooldown of 1.25

An area of effect ability which allows a group of probes to gather one more mineral per trip for a short time by enhancing their proton-cutters

Transfers energy from the Obelisk to an energy-using Protoss unit at a rate of 75 energy per second by right-clicking the affected unit

This Obelisk ability restored shields

Cloaks a unit for a short time. It can be used on air units and even the Mothership but not buildings. 

Restores 50 shield points of all friendly Protoss units in an area of effect. 

Allows the Tempest to build up to 8 Shuriken that are automatically released when an enemy is detected. 

The Mothership can instantly travel to a Protoss building. The ability only works on fully constructed buildings. 

A High Templar causes the targeted unit to phase out for 10 seconds. Phased units are immune to all damage and most effects, but they are unable to attack or use abilities.

The Nullifier temporarily prevents units within its area of effect from activating abilities that require energy. Detects hidden units within the targeted area. 

This ability will allow the Nullifier to lift up buildings and units in the air, disabling their movement and attack, while also making them an air target 

The unit fires a Psionic projectile which bounces back and forth between units of the same type, doing 10 damage with each hit, up to a maximum of 10 bounces. 

Increases Nullifier maximum energy by 50. 

Increases the Void Ray's movement speed by 0.703 and its acceleration by 0.6875. 

Carriers can manufacture up to four escorts.

Gives High Templar 25 more starting energy. 

Allows the Dark Templar to use super cloak for a short time

Dark Templar can stun a target unit for a short time

Dark Templar sacrifices themselves to restore a units energy to full

Dark Templar deals massive damage to target unit or structure

Allows the Dark Templar to Blink up cliffs much like a Reaper

High Templar creates a barrier that lasts 11 seconds and impedes movement of ground units. Massive units will shatter Force Fields on contact. Hallucinated Massive units cannot shatter Force Fields. 

High Templar creates hallucinations of Protoss units at the caster's location, that cannot use active abilities, cannot deal damage, and die more easily. Enemy detectors can reveal hallucinations. 

While the Immortal has shields remaining, incoming attacks that would deal more than 10 damage have the damage reduced to 10

Increases Phoenix's speed

Increases Phoenix's sight range

The Oracle phases out a unit for approximately 45 seconds, preventing it from attacking, using abilities, researching, or building

Gives vision of hatcheries, but does not show what larvae are evolving into. As the building now spots for a Protoss player, it can provide vision for the long-range Tempest attacks. 

The ability has an energy cost of 50 and a range of 7. It is channeled against an enemy structure. Until canceled, it deals 3 damage and gives the player 3 minerals per second but does not subtract minerals from the enemy player. 

Increases the Oracle's starting energy by 25 

Encases minerals in an area of effect in a shell, making them unharvestable. The shell has 130 HP and can be destroyed.

Oracle area-of-effect defensive ability. The ability lasts 5 seconds. It removes and renders units immune to these effects: Fungal Growth, Corruption, Contaminate, Graviton Beam, Concussive Shells, Abduct, Revelation, Vortex, and 250mm Strike Cannons

Increases Tempests’ range by 12, to a total of 22 range. 

Grants the Tempest a +35 damage bonus against massive units

Tempest charges up for 4 seconds, and then stuns enemy ground units and ground structures in the target area for 7 seconds. 

Crippling Psionic Storm acts identically to the normal Psionic Storm, with the additional effect of inflicting the "Crippled" effect on enemies, sapping their armor by 5 for 10 seconds. 

Mega Archon combusts a target Biological enemy for 20 seconds, dealing 20 damage per second to the target and nearby biological enemies. 

Mega Archon can summon in friendly units to aid them in battle

Mega Archon deals 150 damage on a friendly building over 14 seconds to gain 50 energy. The ability does not work on units. 

Psionic Storm deals 200 damage to enemy units in the target area over a short time. Friendly units are not damaged. 

Artanis knocks all enemy units away, dealing 20 damage and stunning them for a short time. 

Artanis creates a large Temporal Field that freeze enemy units and structures in time for 20 seconds. Heroic units are slowed by 50%

Grants Artanis brief glimpses of the future, giving him a 25% chance to evade incoming attacks and regenerating 25 energy for him when he does so 

Artanis is able to stun enemies in an area of effect for 3 seconds 

Artanis and all nearby allies gain 30% Attack Speed and 10% Movement Speed

Original Archon Merge ability required three High Templars to channel for a short time before transforming into a Mega Archon

Zertaul was originally able to drop/create Phase Mines similar to a Vultures ability to drop/create Spider Mines