After being within the Killer's Terror Radius for 40/35/30 seconds without being chased, Diversion activates:
Press the Active Ability button while crouched and motionless to throw a pebble, creating a distraction for the Killer at a distance of 20 metres from your location.
The distraction consists of the following:

Triggers a Loud Noise Notification.
Creates fake Scratch Marks.
Diversion deactivates after use and resets its timer.

While repairing a Generator, its Aura is revealed in yellow to all other Survivors located within 32 metres.
If the Killer downs a Survivor while you are repairing a Generator, you see the Auras of all other Survivors for 8/9/10 seconds.

Failing a Skill Check while repairing:

Prevents the Generator Explosion.
Applies the default Regression penalty.
Applies an additional Regression penalty of 5/4/3 percent.
Technician reduces the audible range of your Generator-repairing noises by 8 metres.

After being unhooked or unhooking yourself, instantly gain 40/45/50 percent to your Healing progress.

Increases your Repair speed by +15 percent for each other Survivor within 4 metres of your location, up to a maximum of +45 percent.
This effect is also applied to all other Survivors within that range.
Grants 50/75/100 percent bonus Bloodpoints for Co-operative actions.
Survivors can only be affected by one instance of Prove Thyself at a time.

Increases the Action speeds of other Survivors in Healing, Sabotaging, Unhooking, Cleansing, Opening, and Unlocking by 15/20/25 percent while they are within 8 metres of your location.
This effect lingers for 15 seconds when leaving Leaders range.
Survivors can only be affected by one instance of Leader at a time.