World bosses spawn in the open world and can be attacked by any player (un)fortunate enough to cross their paths. Salyis's Warband will be quite rare, while the expansion's other boss will appear with fairly regular frequency. But before you charge headfirst into battle, keep in mind that it will take the combined efforts of a full raid to bring one of these guys to their knees.

Taking down a world boss is no small feat, but the rewards make it all worthwhile: achievements, fabulous items, and massive bragging rights will all be yours if you and your comrades in arms succeed in felling one of these roving terrrors. Check back soon for more info on the game's other world boss, the Sha of Anger!
Abilities
Fire Shot
Saurok Skirmishers riding on Galleon's back fire flaming crossbow bolts at random players, inflicting Fire damage.
Stomp
Galleon stomps the ground, inflicting Physical damage to players within 100 yards and knocking them down for a few seconds.
Cannon Barrage
Chief Salyis orders his minions to fire off eight powerful cannon blasts. Each blast inflicts Fire damage to players within 10 yards and knocks them back.
Salyn Warmonger
Chief Salyis's Warmongers periodically jump down from Galleon's back to engage players.
Impaling Pull
The Warmonger uses an Impaling Pull to bring a distant target towards them and inflict Physical damage.
Source:
Taking down a world boss is no small feat, but the rewards make it all worthwhile: achievements, fabulous items, and massive bragging rights will all be yours if you and your comrades in arms succeed in felling one of these roving terrrors. Check back soon for more info on the game's other world boss, the Sha of Anger!
Abilities
Fire Shot
Saurok Skirmishers riding on Galleon's back fire flaming crossbow bolts at random players, inflicting Fire damage.
Stomp
Galleon stomps the ground, inflicting Physical damage to players within 100 yards and knocking them down for a few seconds.
Cannon Barrage
Chief Salyis orders his minions to fire off eight powerful cannon blasts. Each blast inflicts Fire damage to players within 10 yards and knocks them back.
Salyn Warmonger
Chief Salyis's Warmongers periodically jump down from Galleon's back to engage players.
Impaling Pull
The Warmonger uses an Impaling Pull to bring a distant target towards them and inflict Physical damage.
Source: