- Not available on that edition (the reason is in the tooltip)
- Depends on the setting, your class or another addon (details in the tooltip)
What it does
Checks if the game reports that you have full control of your character, so you are not stunned, feared, charmed or similarly controlled.
Why you might use it
Check that you have full control of your character, meaning you are not stunned, feared, charmed or otherwise controlled. Negate it to bring a break-free ability to the top while you are controlled, such as a PvP trinket or Will of the Forsaken, or require it so the rotation does not suggest actions you cannot take. Being in control does not guarantee that a particular spell is usable. See also Loss Of Control Type and Loss Of Control Blocked.
Example
you are in control of your character
Settings
What each setting in the condition editor means, from the game's own help.
Matches when the game reports that you have full control of your character. This does not guarantee that a particular spell is usable.