Ambushes
From phase three onwards, players that are aligned to one of the two factions can be attacked by ambushers of the opposing faction, up to 3 times per day. Killing these ambushers will result in a generous amount of renown.
Ambushers cannot attack in the following places:
Daemonheim.
Banks.
The Wilderness.
Instances.
The ambushers will also not attack while a cutscene is active, if you are already in combat or if you are at less than half health.
Ambushes have the chance to occur between 15-45 minutes after you log in. Once an ambush has successfully occurred, the next one will be attempting in 1-2 hours time. If an ambush can't occur on the first try, it will try again 10 minutes later.