Every 15 seconds you are within the Killers Terror Radius, while not being chased, Stake Out gains 1 Token, up to a maximum of 2/3/4 Tokens.

When Stake Out has at least 1 Token, Good Skill Checks consume 1 Token and are considered Great Skill Checks, granting an additional Progression bonus of 1 percent.
Great Skill Checks do not consume any Tokens.

Your presence psychically projects itself to those in danger.
Whenever another Survivor is injured, they can see your Aura when within 32/64/96 metres of your location.
You heal other Survivors 10 percent faster.

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.

After cleansing a Totem, Overzealous activates:

Increases your Repair speed by 6/7/8 percent if it was a Dull Totem.
Increases your Repair speed by 12/14/16 percent if it was a Hex Totem.
Overzealous deactivates when losing a Health State by any means.