How to Get Knife of the Undermountain King in Baldur’s Gate 3

The Knife of the Undermountain King is a fantastic shortsword in Baldur’s Gate 3, and you can get it at the beginning of Act 2 – This short guide explains everything you need to know about the Knife of the Undermountain King in BG3.

Knife of the Undermountain King Baldur’s Gate 3 BG3

Knife of the Undermountain King

The Knife of the Undermountain King in Baldur’s Gate 3 is a versatile weapon, possessing excellent bonuses, and making it suitable for rangers, rogues. Its unique feature, Shadow Blade, grants the wielder an Advantage on Attack Rolls when targeting Lightly or Heavily Obscured foes. This advantage can be a game-changer, particularly for characters who rely on stealth or prefer to strike from the shadows. In addition to its exceptional advantage-granting ability, the Knife of the Undermountain King boasts a Weapon Enchantment of +2, further increasing its potency in combat.

Thanks to the Organ Rearranger bonus when rolling a 19, the wielder scores a critical hit, increasing the damage output. Moreover, if the initial damage roll is two or less, the blade allows a reroll, taking the highest result. This unique feature applies to various types of attacks, including offhand weapons, ranged attacks, and spell attack rolls, making it a versatile tool for a wide range of character builds.

You can equip it to your character’s main hand weapon slot in the inventory, providing additional bonuses and buffs. The user needs Martial weapon proficiency or suffers penalties while wearing the weapon. You can equip it on any class, companion, or character with Martial Weapon Proficiency.

The Knife of the Undermountain King features in Baldur’s Gate 3:

  • Weapon Type: Shortsword, Finesse
  • Damage: 1D6 +6 Piercing
  • Requirements: Martial Weapon Proficiency
  • Weight: 0.9 kg
  • Value: 1392
  • Rarity: Very Rare
  • Location: A’jak’nir Jeera vendor in Mountain Pass, Creche Y’llek (X:1389 Y:-821), Act 1/2
  • Organ Rearranger: The wielder scores a Critical Hit when rolling a 19. When they roll 2 damage or less, reroll the dice, taking the highest result.
  • Shadow Blade: You have Advantage on Attack Rolls against Lightly or Heavily Obscured targets when using this blade.
  • Weapon Enchantment: +2
  • Classes with Martial Weapons Proficiency: Cleric(Tempest Domain, War Domain), Fighter, Ranger, Paladin, Barbarian, Bard (College of Valour)
  • Companions Who Can Use This Weapon: Lae’zel, Minthara, Karlach, Minsc

How to Get the Knife of the Undermountain King in Baldur’s Gate 3

Rosymorn Monastery location in Baldur's Gate 3
Rosymorn Monastery Entrances in Baldur's Gate 3

A’jak’nir Jeera sells the Knife of the Undermountain King for 720 gold in Creche Y’llek in Mountain Pass while transitioning from Act 1 to Act 2.

Here is how to get the Knife of the Undermountain King in BG3:

  1. Progress in Act 1
  2. Head to the northwest corner of the Act 1 area and head to a different area called Mountain Pass. (X:-127 Y:561)
  3. Find the Creche Y’llek on the far north end of the map.
  4. Explore the Monastery and Enter the Creche
  5. Depending on your choices, Githyanki will be hostile to you or “temporarily” friendly.
  6. Locate A’jak’nir Jeera, a vendor on the east side of the Creche (X:1389 Y:-821).
  7. Buy the Knife of the Undermountain King from them 1392 Gold!
Enter the Creche Y'llek Rosymorn Monastery - Baldur's Gate 3 - BG3

Find the Githyannki and Creche Y’llek

You can find the Knife of the Undermountain King and A’jak’nir Jeera, who sells them in the Githyanki Creche. The entrance to the creche is from the Monastery, where it’s worth exploring the area and solving ceremonial weapon puzzles to get the Blood of Lathander, a mighty legendary mace.

To access Creche Y’llek, make your way to the eastern side of the Monastery, where you can jump down from the damaged stairs (X: 109; Y: 22). You’ll encounter another set of stairs leading to the Creche, a location with NPCs, valuable treasures, merchants, and potential side quests. A’jak’nir Jeera (X:1389 Y:-821), a local vendor, can be found directly east of the main hall where you initially arrive—or situated north of the Creche Y’llek fast travel waypoint in a small cave area. You can acquire the Knife of the Undermountain King from her for 1392 Gold.

If you aim to obtain the legendary mace, your next step is to proceed to the Inquisitor Chambers, which is also part of the Lae’zel and Remove Toadpole questlines. Remember that to obtain the item from the vendor, you must act friendly towards Githyanki first.

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