Divinity: Original Sin 2 is an acclaimed RPG renowned for its tactical depth, gripping narrative, and a wealth of secrets to uncover. Among the many intriguing items you can find in the game, the Key of the One is certain to pique your interest.

The Key of the One is acquired upon becoming the champion of Driftwood Arena, but its purpose isn't apparent from until you make it to the Nameless Isle in the third act of the game. If you've picked up this key and aren't sure about where to use it, this guide will help you with everything you need to know about this mysterious item.

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What Is The Purpose Of The Key Of The One?

Characters accessing the Armaments of the One in Divinity - Original Sin 2

The Key of the One is associated with a quest tied to becoming the "One." You first hear of this title in Fort Joy, with the chance to prove your might in the Fort Joy arena and potentially be crowned as the champion of the arena.

Later on, when you progress to the second act of the game, you can once again prove yourself in the Driftwood Arena, claiming the coveted title of the One, and acquiring the Key of the One. This mysterious key grants you access to a secret, yet challenging combat encounter on the Nameless Isle.

Where To Use The Key Of The One

The Great Guardian in the Arena of the Ages in Divinity - Original Sin 2

The Key of the One is used to unlock a door in the Teacher's Hall in the Academy of the Seven, on the Nameless Isle, in the third act of the game. The Academy of the Seven is a major location on the Nameless Isle where a series of major events progress the main plot. Here are the detailed steps involved in using the Key of the One:

Access The Teacher's Hall

Divinity: Original Sin 2's third act takes you to the Nameless Isle, a pivotal location to progress both the main plot and the stories of your companions. The main quest on the Nameless Isle requires you to open the Lunar Shrine and ascend to Divinity. It is inside this temple where you'll discover the Academy of the Seven and the Teacher's Hall.

Access The Portal

To the southeast of the Teacher's Hall is a locked door (coordinates: X:621, Y:634), which can be opened with the Key of the One. The door leads you to a small room called the Armaments of the One with a portal in the middle.

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Enter The Arena Of The Ages

Interacting with the portal teleports you to a secluded area called the Arena of the Ages with a dead hawk named Ghechswolf, the Arena Master. Casting Spirit Vision allows you to interact with the Arena Master, who provides you with a new "Proving Ground" side quest, which progresses the plot of "the One."

It's recommended to save your game before proceeding through the door behind the hawk, as it puts you directly in a battle against a powerful group of Automatons.

Collect The Reward

Once you've defeated the Automatons, you can return to the dead hawk and claim your prize for succeeding in the challenge and proven yourself to be the one. The prize includes some randomized epic-tier gear, of which you can pick only one.

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Divinity: Original Sin 2 Tag Page Cover Art
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Top Critic Avg: 93 /100 Critics Rec: 99%
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Released
September 14, 2017
ESRB
M for Mature: Blood and Gore, Language, Sexual Themes, Violence
Developer(s)
Larian Studios
Publisher(s)
Larian Studios
Engine
Divinity Engine 3.0
Multiplayer
Online Multiplayer, Local Multiplayer
Franchise
Divinity
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WHERE TO PLAY

DIGITAL
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Split Screen Orientation
Vertical
Platform(s)
Switch, PS4, Xbox One, PC
Genre(s)
RPG
How Long To Beat
60 Hours
OpenCritic Rating
Mighty