It’s unclear whether crafting the plague mask in Kingdom Come: Deliverance 2‘s new Mysteria Ecclesiae DLC is necessary, but I know I wouldn’t want to delve into a plague crypt without a little protection. If you’re mindful of the potential consequences of exposing yourself to plague and spreading it around, you’ll want to do as the physicians suggest and craft yourself a plague mask as part of the Prevention quest.
The bad news is that Sedletz Monastery has gone into lockdown, its monks into seclusion, and the abbot has ordered you to stay put in the infirmary, and absolutely not go sneaking about investigating the source of the plague. But sneaking about you will go if you want to grab the necessary materials for the plague mask, so make sure to avoid guards and save often.
Where to find mint and sage
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Your first step in crafting the mask is gathering some herbs, which you can do in the Woodland Garden in the southeast of the map, by Herbalist Joachim’s hut. You can’t purchase anything from Joachim, so you’ll have to pick these yourself from the garden. You’ll want:
- 8x mint
- 3x chamomile
- 1x sage
- 1x valerian
While you only need the mint according to the objective, you’ll need the chamomile, sage, and valerian to brew the Essential Oil once you have its recipe, so grabbing this now will save you coming back later.
Where to find the Aromatic Oil recipe
Next up is the oil recipe. You can get this by reading the book on the lectern in the southwest corner of the library—you will have visited here before while investigating the plague victims.
If you speak to Crispin, the librarian, you’ll have to convince him why you’re breaking quarantine, so it’s better to just find and read the book if possible. Once read, you’ll automatically get the Essential Oil recipe in your inventory.
Where to find rope and leather
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Now you need rope and leather, or in this case, Flax Rope and Pig Skin. You can find both of these at the building site just to the south of the main entrance to the monastery chapel, in the west of the map—just be careful of all the guards wandering around and make sure they don’t catch you.
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While there might be more scattered around, the Pig Skin is on a table on the north side of the site, while the Flax Rope is on the ground next to a barrel by a parked cart.
How to brew the Essential Oil
The recipe for brewing the Essential Oil is pretty straightforward. The most convenient alchemy station to use is in the right-hand back room of the infirmary, though there’s also one by Herbalist Joachim’s hut near the herb garden. You can find the recipe at the back of your book, or simply:
- Add the chamomile and boil for three turns
- Grind the sage and add to the cauldron
- Boil for one turn
- Grind the valerian and add to the cauldron
- Finally pour
How to craft the plague mask
Now all you need to do is assemble the plague mask, which you can do by interacting with the table in the backroom of the infirmary, the same room with the alchemy station where you likely just brewed the oil. With your mask ready, you’ve completed the Prevention quest, and you’re all prepped to delve into Sedletz crypt and investigate the mysterious plague.
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