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Dragon Age: The Veilguard — Sea of Blood Quest Walkthrough

A spoiler-aware walkthrough for Sea of Blood in Dragon Age: The Veilguard, including the Ossuary route, missable memento, boss tips, and dialogue outcomes.
Length3 min Posted Quest giverVGSources Team
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In Dragon Age: The Veilguard’s “Sea of Blood,” travel from the Crossroads to Treviso, follow the Antivan Crows to the Ossuary, destroy the container holding Lucanis’s blood, and defeat Calivan to recruit Lucanis Dellamorte. The Ossuary cannot be revisited after you leave, so collect its mementos and explore side rooms as you go.

How to start Sea of Blood and find Lucanis

  1. After exploring the Crossroads, take the easternmost eluvian to Treviso to begin the quest.
  2. Meet Teia and the Antivan Crow leadership, including Viago, Illario, and Caterina.
  3. Follow Illario to the Ossuary. Work through its crystal barriers and rooms to reach Lucanis.

Explore the Ossuary before moving on

The Ossuary is a one-time area: once you leave at the end of the quest, you cannot return. Some sections also contain points of no return. Pick up finite mementos and check side rooms as you progress rather than waiting until after a boss fight.

Collect the Dragon’s Decoy Memento

Look for the Dragon’s Decoy Memento on a laboratory table. It is worth +50 Caretaker Power.

Use crystals to open routes and reach side rooms

When a barrier is powered by a crystal, destroy the three shielding crystals protecting it, then destroy the barrier crystal itself. In other puzzle rooms, move the power crystal between receptacles to form bridges and reach chests or side areas.

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#1 Best Overall
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  • This video game is an immersive action role-playing game (RPG). Play Dragon Age: The Veilguard and become the leader others believe in
  • SAVE A BATTERED WORLD - Enter Thedas, a vibrant world of rugged wilderness, treacherous labyrinths and glittering cities. The world is teetering on a knife’s edge while corrupt gods unleash havoc across the continent. Nations war and factions splinter. Who will you trust? From the Arlathan Forest to the back alleys of Minrathous, this is a broken world. Your actions will affect the fate of Thedas forever.
  • Unite THE VEILGUARD - Unite a team of seven companions, each with rich lives and deep backstories. These are characters to befriend, and even fall in love with. Among them, an assassin, a necromancer, a detective, each and all bringing their own expertise and unique abilities to the fight. You are never alone, decide who to take into battle and together face down demons, dragons and corrupt gods.
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Cross the Fade distortions promptly

Use Lucanis’s Veil Instability ability on purple Fade distortions to create temporary platforms. Cross them without delay; they do not remain indefinitely.

Defeat the Fabricator and reach the Blood Vault

Continue through the Ossuary’s barrier and receptacle puzzles until you encounter the Fabricator. It is reported to be weak to necrotic damage and resistant to electric damage, making Lucanis a useful source of damage.

Rank #2
Electronic Arts Dragon Age: The Veilguard Standard Edition PS5 | VideoGame | English
  • Dragon age the veilguard action rpg: Immersive action role-playing game where you become the leader others believe in as Rook
  • Save a battered world: Explore Thedas, a vibrant realm of rugged wilderness, treacherous labyrinths and glittering cities teetering on the edge as corrupt gods unleash havoc
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Watch for lightning bolts, marked area attacks, and magical bolts released from stored energy. After the fight, open the chest for the Glaciate Rune. The guide reports that it passively adds 10% cold damage and, when activated, changes weapon attacks to cold damage for 20 seconds.

Proceed through the remaining Ossuary route to the Blood Vault. Destroy the container holding Lucanis’s blood, then take the northern elevator toward Calivan.

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Rank #3
Electronic Arts Dragon Age: Veilguard PS5
  • This video game is an immersive single player role-playing game in which you become full of hope; unite the guardian of the veil and defy the gods in Dragon Age: The Veilguard
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How to beat Calivan

Calivan’s encounter has multiple phases. He starts with clones and projectile attacks, and also uses marked blight spikes. Quick area damage can clear the clones. At about half health, he summons Calivan’s Pride; defeat the demon and mage, then face Calivan again for the final phase.

Calivan is weak to cold damage, so the Glaciate Rune can be useful if you equip it. Calivan’s Pride attacks with sword strikes, claw swipes, shockwaves, and marked lightning attacks. Its sword strikes can be blocked, and Lucanis’s necrotic damage is another option against the demon.

Rank #4
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After the fight, search the room for loot, then speak to Lucanis to leave the Ossuary.

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Dialogue choices, approval, and Lucanis romance

Game8’s quest guide reports that the return conversations can affect companion approval and romance. Treat these outcomes as reported guide details rather than independently confirmed dialogue results.

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  • “My condolences” earns Lucanis approval.
  • “There’s got to be another way” earns Bellara approval.
  • At the final conversation, “Should you be alone now?” progresses Lucanis romance; “Welcome to the team” earns Lucanis approval; “I’ll keep an eye on you” causes Lucanis disapproval.

These choices do not override the earlier city decision. EA’s official romance guide says choosing Minrathous over saving Treviso earlier in the game immediately locks out Lucanis’s romance. EA also describes Lucanis as favoring an active, decisive Rook and identifies the Antivan Tea Seat, sold by the Antivan Crows merchant in Treviso, as his gift.

Quest rewards

Game8’s search-result listing reports these rewards; its quest page was not independently available to verify the details:

  • 3,000 XP
  • 500 gold
  • Lucanis recruited
  • 100+ Antivan Crows Strength
  • Increased bonds with the current companion and Lucanis

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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