Builder’s Gate

Updated 2026-09-27

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Knife of the Undermountain King is an item of Very Rare rarity. Type: Shortsword · Martial Weapon. Damage: 1d6 Piercing. Recorded sources: Act 1 · Mountain Pass · Purchase. See acquisition details below for conditions. Weight 0.9, Value 480 gold. Passives: Organ Rearranger, Shadow Blade. Granted abilities: Piercing Strike, Flourish.

Knife of the Undermountain King

Very Rare

Shortsword · Martial Weapon

1d6 Piercing

Weapon Enchantment +2

Organ Rearranger: Reduce the number you need to roll a Critical Hit while attacking by 1. This effect can stack. When you 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.

Piercing Strike Action Flourish Bonus Action

Snatched from the realm of the mad wizard Halaster Blackcloak, this knife became a prized keepsake of a duergar king.

How to obtain

Act 1 Purchase Mountain Pass

0.9480

Related creatures1

Equip in build2 available slots — opens the first slot