- 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 unit specified is flagged for PvP.
Why you might use it
Tells whether a unit is flagged for player-versus-player combat, which is handy for switching to a PvP-oriented rotation (more crowd control, defensive cooldowns, burst) while you are flagged out in the world. It is a switch condition only, so it chooses which rotation is active rather than guarding a single step. On Retail and WoW Forever the game can hide another unit's identity details; when it does, the condition is unavailable for that check. See also Zone PVP and Instance.
Example
you are PVP flagged
Settings
What each setting in the condition editor means, from the game's own help.
Unit - The unit this condition uses as the target of comparison.