The Blood of Dawnwalker: How to Get the Phial of Ambrus’s Blood

The Phial of Ambrus’s Blood is a Unique consumable in The Blood of Dawnwalker, and drinking it permanently unlocks the Scarlet Shield passive in Coen’s Vampirism tree. It also pushes his Corruption up sharply, so it isn’t a casual sip. There are two reliable ways to add one to your inventory, and the most straightforward is a short side quest called Lost Blood in St. Tyna’s Grove.

Quick answer: Head north of the Pilgrim’s Trail Shrine in St. Tyna’s Grove, follow the blood trail west into the cave, kill Murohn, Malformed Monstrosity, and loot the phial from its corpse.

What the Phial of Ambrus’s Blood does

The phial holds blood taken from Ambrus, the youngest of the vampiric vassals. Its in-game description is blunt about the trade-off, noting that his blood is potent despite his age and that drinking it significantly raises Corruption. What you get in return is Scarlet Shield, a defensive passive in the Vampirism tree that restores health after you block.

Property	Value
Rarity	Unique
Type	Consumable (Shared)
Weight	0.1
Cost	158
Effect on use	Unlocks Scarlet Shield in the Vampirism tree; significantly increases Corruption

Scarlet Shield scales as you invest skill points and raise Corruption. At its base rank it restores 20 percent of a Health Segment after a Perfect Block, with a 20 percent chance to trigger on a Directional Block and 10 percent on an Omniblock. The upper ranks add lifesteal on the follow-up attack and a chance to convert any block into a Perfect Block.

Corruption	Points	Effect
—	1	Restore 20% of Health Segment after Perfect Block. 20% chance after Directional Block, 10% after Omniblock.
6	1	Restore 25%. 20% chance after Directional Block, 15% after Omniblock.
10	2	Restore 25%. 20% after Directional Block, 20% after Omniblock. Attack after Perfect Block heals 10% of damage dealt.
13	3	Restore 30%. 30% after Directional Block, 25% after Omniblock. Same lifesteal, plus 25% chance for any Block to become a Perfect Block.

Where to find the phial in the Lost Blood quest

Lost Blood triggers on its own. There’s no quest board and no NPC to talk to first, so simply getting close to the wreckage or the cave entrance in northern St. Tyna’s Grove starts it. The whole thing costs two time segments, one for the fight and one for the trip into the city.

Fast travel to the Pilgrim’s Trail Shrine in St. Tyna’s Grove and walk north along the road. You’re looking for a smashed blood transport cart surrounded by broken barrels and spilled blood.

Hold Focus Mode (L2 on PlayStation, LT on Xbox) and inspect the barrels, the cart, and the blood. Clues nearby include Blood Transport Orders and a soldier’s corpse, and the objective marker asks you to investigate the cart this way.

Follow the highlighted trail west. It runs past a severed arm and ends at a cave entrance, and it stays visible for as long as you keep Focus Mode active.

Focus Mode highlighting the blood trail leading away from the wrecked transport cart — The blood trail stays lit in Focus Mode all the way to the cave mouth. Image: Rebel Wolves

Enter the cave and fight Murohn, Malformed Monstrosity. It’s a proper boss encounter rather than a roadside enemy, so block on the timing rather than mashing, dodge the charge, and hit the openings between its swings.

Coen locked on to Murohn, Malformed Monstrosity inside the cave — Murohn, Malformed Monstrosity is the boss guarding the stolen blood. Image: Rebel Wolves

Loot the corpse. It drops the Phial of Ambrus’s Blood along with a Mysterious Ring and Murohn Blood. One time segment passes once the fight ends.

That’s the phial secured. Everything after this point closes out the quest and pays the rest of the rewards, but the consumable is already yours and cannot be lost.

Finishing Lost Blood in Silberstein

Before leaving the cave, use Focus Mode again and read the Letter from Father sitting on the bed. It reveals that Murohn was once a person, and it points you to its author in Silberstein, a district of Svartrau City. There’s Cave Fungus and a bit of loot scattered around the chamber if you want it.

Open the map and fast travel to Silberstein. The General Trader’s shop sits on the southwestern side of the district.

World map open on St. Tyna's Grove before fast travelling to Svartrau City — The map screen centred on St. Tyna’s Grove, where the trail begins. Image: Rebel Wolves

Speak to the Silberstein General Trader and show him the Mysterious Ring. He recognises the emblem from his family tapestry and works out that the creature you killed was his son. You can answer with either “He wasn’t human anymore!” or “I am sorry” — the outcome is identical.

Coen telling the Silberstein merchant that the ring matches his family emblem — Coen connects the ring to the emblem on the merchant’s tapestry. Image: Rebel Wolves

He shuts the shop to grieve. Wait roughly one in-game day by resting or running other errands, then come back the next morning. Returning too early does nothing, since the objective will not update while the shop is closed.

Talk to him again. He apologises, thanks Coen for ending his son’s suffering, and asks whether you still have the ring. Say you do and he buys it back for coin; say you don’t and you keep it. The ring has no stats either way.

Quest journal panel showing the objective to go back to the merchant — The final objective simply asks you to return to the merchant once he reopens. Image: Rebel Wolves

You’ll know it worked when the quest closes out in the journal and the Medicus manual unlocks alongside the experience payout. The trader’s coin arrives during that second conversation.

The second phial: Xanthe’s Recruiters: Just a Bit More

If you want another Phial of Ambrus’s Blood, or you’d rather skip the cave boss entirely, there’s a Court activity south of Svartrau City that hands one over as a quest reward. It’s a much lighter encounter than a full outpost.

Travel south of Svartrau City to start Xanthe’s Recruiters: Just a Bit More. Only a small handful of enemies guard the site, so clear them out.

Approach the box. A Blood Addict interrupts you. Killing or sparing him makes no difference to the reward.

Interact with the box again and choose to collect the Vrakhiri blood, which costs three hours. The quest completes and the phial lands in Coen’s inventory.

Before you drink it

Corruption is the real cost here. A single phial moves the meter a long way, and Corruption feeds into how the rest of Coen’s vampiric abilities behave and scale. Scarlet Shield rewards a blocking, counter-heavy playstyle, so if you tend to dodge out of everything instead of holding your ground, the passive will sit mostly idle while the Corruption stays on your character sheet.

Note: the phials are per-vampire, and the others in the set behave the same way. Ambrus, Bakir, Brencis, and Xanthe each have their own phial tied to a different Vampirism unlock, so grabbing all of Ambrus’s blood does not double up on anything.

Lost Blood is one of the cleaner side quests in the valley. Nothing about it is missable, there are no timed objectives once you start it, and the only real hold-up is the in-game day you have to burn while the merchant grieves. Fill that gap with a Court activity and you’ll walk away with a Unique consumable, a crafting manual, and a bit of coin for two time segments of work.