Grow the Razkovniche Plant in Oghasti, wait a full in-game day, then turn the harvest into an elixir. The Hedgehog Herb finishes at the brewing stage; the permanent health benefit requires drinking the potion.

Investigate and plant

  1. Visit the northeastern house in Oghasti, The Silts. Check the house with the body on a bed, dealing with wolves if they obstruct the approach.
  2. Collect the axe by the front door and watering can beside the house. Inside, take the recipe from the right-hand wall. Examine the seedbox's front and contents to obtain the seeds.
  3. Use Compel Soul on the herbalist during daylight. Present the relevant collected items and finish the growing instructions. Check the journal and nearby pot too.
  4. Plant in the pot across the room and follow the blood-feeding prompt. Planting costs one segment.
  5. Allow at least a full day, reported as sixteen segments, before returning. It is not an exact appointment: later is acceptable. Use other activities during the interval.
  6. Harvest from the same pot. ATH describes a Vidmo encounter outside afterward; be ready to defend yourself before continuing.
Axe pickup beside the hut, with The Hedgehog Herb investigation active. Corpse questioning still requires daylight.
Axe pickup beside the hut, with The Hedgehog Herb investigation active. Corpse questioning still requires daylight. · All Things How / Rebel Wolves

Choose who makes the potion

| Route | What to prepare | | --- | --- | | Coen | Harvested plant, recipe, one Strong Ancient Reagent and two Tatzelwurm Glands | | Anca at Crossroads Inn | Bring the plant; no coin fee, one additional segment | | Silberstein medic, southeast Svartrau | Bring the plant; 100 denarius and one additional segment |

For self-crafting, open Crafting → Utility Items → Razkovniche Elixir. PowerPyx and two ATH versions say this avoids the extra segment charged by another crafter; the remaining ATH version disagrees. Check the displayed cost. See Tatzelwurm Gland locations if ingredients are missing.

Completion and effect

  1. Confirm the elixir is in your inventory and the quest has closed. The quest awards a skill point. Drinking the elixir permanently raises maximum human health by 20% and vampiric health by 10%; owning it alone does not apply those increases.

For missing planting options, recheck daylight, the seedbox and the corpse's item conversations. For an immature plant, check elapsed time rather than repeatedly interacting. For blocked crafting, verify the ingredients or use one of the other brewers.

The screenshot shows axe collection at night, not a working night-time Compel Soul interaction. The extra 100-XP claim and an unavoidable-fight guarantee are not used as completion conditions.