| Heroic | | Mythic |
| Deadly | | Important |
| Tank | | DPS |
| Healer | | Interruptible |
| Magic | | Curse |
| Poison | | Disease |
| Enrage |
Overview
– Dread Captain Lockwood continually retreats from players using
[Evasive] and assaults them with
[Gut Shot].
Upon reaching 66% and 33% health, Dread Captain Lockwood
[Withdraws] to her ship and her crew assaults the party while the area is constantly bombarded by
[Dread Volley].
[Unstable Ordnance] must be used to bombard Captain Lockwood's ship and return her to the battlefield.
Healers
–
[Fiery Ricochet] bounces to 2 additional players and inflicts additional Fire damage.
[Gut Shot] continually damages random party members.
Mass Bombardment
– Dread Captain Lockwoods periodically calls on her subordinates to bombard players with
Sighted Artillery.
Fiery Ricochet
–
Shoots a fiery slug at target player, inflicting 792942 Fire damage and additional 352418 Fire damage every 1 sec for 5 sec, then the missile bounces to 3 nearby players. Shoot
–
Shoots at an enemy, inflicting 881046 Physical damage. 
Evasive
– Constantly flees from melee combat unless snared or rooted.
Gut Shot
–
When not being melee attacked, shoots at random enemies inflicting 1426377 Physical damage on impact and an additional 1307512 Physical damage every 2 sec for 8 sec.
Clear the Deck
–
Sends the targets in a cone in front of the caster flying, inflicting 3565942 Physical damage on impact and knocking them back. Withdraw
– Upon reaching 66% and 33% health, Dread Capitan Lockwood withdraws back to her ship.
Dread Volley
–
Inflicts 4754589 Arcane damage to all nearby enemies.
Ashvane Deckhand
Crimson Swipe
–
Inflicts 1321569 Physical damage to target enemy and increases their damage taken by 5% for 10 sec. This effect stacks.
Ashvane Cannoneer
– A heavy Ashvane soldier that harasses enemies with their cannon.
Broadside
–
Fires a cannon that inflicts 3125419 Arcane damage to all enemies caught in the path. Unstable Ordnance
–
Leaves behind unstable ordnance. Fire this ordnance at the Dread Ship to force the boss back onto land.
Carrying unstable ordnance reduces your movement speed by 45% for 10 sec.
Heroic and Mythic Difficulty Only
Siege of Boralus is not available in Normal difficulty.
Damage Dealers
– 
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