Throughout your adventures inElden Ring: Shadow of the Erdtree, you will come across various NPCs looking to give out quests, maybe not directly. You will need to finagle your way into their hearts before they’re able to trust you. One such individual is Thiollier, a merchant who specializes in poisonous materials. It’s only suited that he can be found near a poisonous swamp.

Thiollier Location

Thiollier is located off the cliffoverlooking the Abyssal Woods. you’re able to access him fairly early on in the story. From the start of the expansion, head north to theTree-Path Crossgrace and head northeast across theEllac Greatbridge.

Take the right path and up the slope until you reach one ofMiquella’s Crossesand a new grace, Pillar Path Cross. Sitting next to it will be Thiollier who, at this point, will not be able to start the quest.

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Progress the story by defeating theDivine Beast Dancing LionatBeluratand you will take notice thatMiquellais headed eastward. Follow these instructions and head eastward, coming up on theShadow Keep. You will hear a loud pop and be notified that “Somewhere, a great rune has broken…” and “And so too has a powerful charm.”

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The Fissure

This will signify an area in the world has been unsealed. Head all the way south of the map. As south as one can be, past theCerulean Coastand onto the elevated cove. Here, there will be a large hole where you are able to platform your way downward, and now that the seal is broken,The Fissurearea has been unlocked to you.

This is a desolate place filled with crashed ships and the eyed stone clusters from the base game will now shoot lasers at you and fling themselves. This is a short area, with the boss requiring a bit of a leap of faith off one of the ships. Here you will fight thePutrescent Knightand his mount.

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Upon killing it, you’re able to enter the small cave it came out of to find a rather strange beauty who seems to be holding her head in her hands. This is St. Trina whose nectar is said to put you in a deep, deathly sleep. Head back to Thiollier and inform her of where St. Trina is hiding and he will travel there immediately.

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It’s time to think outside the box once more. Unfortunately, no matter what you do, drinking St. Trina’s nectar will kill you, bringing you back to grace. Fortunately,Thiolliergives you a clue what to do:don’t give up. He states that maybe if he continues to imbibe her nectar, he could eventually hear her speak.

Elden Ring: Shadow of the Erdtree

So that’s what needs to be done. Continue to drink her Nectar and eventually you’ll notice upon death that the fadeout will be longer.St. Trinawill begin talking to you. She will give you three or four unique conversations when dying.

Talk toThiollierabout this, but unfortunately, he believes himself is the main character of this story, and there’s no way a lowly individual such as ourselves would ever be given the right to hear her beautiful voice when he cannot. As you might expect,Thiollierbecomes jealous to the point if you continue toinsist upon imparting the wordsSt. Trina speaks to him, he will become furious.

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So furious that the next time you come back, or reset at the grace, he will invade your world. He’s a poison dealer, not actually doing much damage, so dispatch him quickly and rest at the grace once more. He will also drop St. Trina’s Smile, a talisman for users of sleep attacks.

Upon going back toSt. Trina, Thiollier will still remain, but be in a more broken state as he believes he was no good in the end. In the end, pass along St. Trina’s message along once more, and he will slowly become more, believing that she actually said such words.

Unfortunately, that ends the questline all together. Doing this will allow you to summonThiollierat the final boss, although even with his poison, he’s probably one of the least capable warriors in the expansion.

Elden Ring: Shadow of the Erdtree

Shadow of the Erdtree is the first and only DLC expansion for FromSoftware’s groundbreaking Elden Ring. It takes players to a whole new region, the Land of Shadow, where a new story awaits the Tarnished.