Proving Ground

Spirit Bird
Location The Academy
Suggested Level 17
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Proving Ground is a Quest in Divinity: Original Sin II. Entering the portal, you face yet another challenge similar to the other trials of the One back at Driftwood and Fort Joy. Will you triumph and be worthy of the title of "The One"?



Important NPCs



Proving Ground Objectives

  1. Enter the portal.
  2. Speak to the Spirit Bird.
  3. Kill the Great Guardian.
  4. Report back to the Spirit Bird.



Proving Ground Walkthrough

In the Teacher's Hall at the Academy, there is a door that can be lockpicked. Entering the room beyond, which is called "Armaments of the One", you will immediately be awarded 27,900 Exploration XP. Head towards the portal and enter it.

Upon entering the portal, you will gain another 41,850 Exploration XP. Continue onwards and you will see the body of a dead bird. Cast Spirit Vision to see the spirit of the bird, and speak to her. Agree to her challenge to fight some battle-hardened construct.

Enter the vast chamber, and you'll find a huge guardian there called "The Great Guardian", along with 2 Eternal Protectors and Eternal Sentinels. He will demand you leave, and if you try to move closer, he will initiate combat. It is not a difficult fight, and if you kill the Great Guardian, all the smaller constructs will be destroyed. The Eternal Protectors and Eternal Sentinels are worth 27,900XP each, while the Great Guardian himself is worth a whopping 97,650XP. All the smaller constructs will award XP upon death regardless if they were killed by your hand or because the Great Guardian died, so needless to say the most optimal way is to simply focus fire and destroy the Great Guardian. When killed, the Great Guardian drops the "Blade of the Swornbreaker", one of the pieces to craft the Swornbreaker weapon, as well as several Divine-quality loot.

If you are having difficulty with this fight, there are Eternal Reflectors here that can be moved, with a phase conductor that is located behind the Great Guardian. Placing a Phase Capacitor on the conductor can shoot a beam forwards onto the reflectors. Directing the beam at the boss will stun it and keep its magic armor at 0 for as long as the beam is focused on it. You can use invisibility potions or spells to do all this without being noticed. Ultimately though, the simplest solution is to cast a powerful source spell such as Meteor Shower or Hail Storm, and since the Great Guardian is so big, nearly all the shards will hit it, resulting in a quick one-shot kill move.

In any case, once the Guardian is a pile of trash heap on the ground, report back to the Spirit of the Bird, and you will be deemed worthy of being "The One". The quest is not removed from the journal, though.





  • 27,900 Exploration XP upon entering the "Armaments of the One" room.
  • 41,850 Exploration XP upon entering the portal.
  • 27,900XP for each Eternal Protector and Eternal Sentinel, plus 97,650XP for the Great Guardian, which adds up to a grand total of 209,250XP.
  • "Blade of the Swornbreaker" crafting material on the body of the Great Guardian.
  • There are 2 eternal plates and a giant thunder rune in the gallery at the far north end of the room.

    • Anonymous

      16 Sep 2018 01:13  

      Easiest way to deal with the fight is have 1 character enter the fight from the front. While having a thievery 5 out of combat character sneak around and steal their power core. Works on the boss too

      • Anonymous

        25 Jun 2018 04:25  

        There is a small spectator area with a collapsed entryway at the North end of the room with the Great Guardian. You can teleport there. I found a giant thunder rune there.

        • Anonymous

          25 Jun 2018 04:21  

          I got a Divine shield and a Divine ring from the Great Guardian. One of the energy chests in the room was empty, though.

          • Anonymous

            25 Jun 2018 04:19  

            Engagement Tip: When you attack, make sure only your mage (for thunderstorm) is in the front. This will allow you to cast Thunderstorm on the Great Guardian and the two sentinels will not do their jump jet + laser ray combos on your entire party (since they aren't in the fight yet). The rest of your party will be drawn into the fight as the automatons move closer.

            • Anonymous

              27 Apr 2018 15:35  

              Got no exp from the smaller ones, only the big guy. Also never got a quest/quest reward since I failed the convo with the bird after I had already killed the constructs. Wtf

              • Anonymous

                09 Apr 2018 01:03  

                Just have a mage that is adept in aero and use thunderstorm, it utterly destroys them as they are weak to air.

                • Anonymous

                  09 Mar 2018 05:42  

                  Don't miss the two eternal plates up in the viewing area. Holding alt will not display them, they are sitting on pedestals behind the chairs.

                  • Anonymous

                    02 Mar 2018 00:29  

                    Had a bit of trouble with the guardian as a rogue. So, I burst down its physical armor in one round, and for the last action point cast shackles of pain on it.
                    It suicided itself damaging me. Hope this helps someone.

                    • Anonymous

                      14 Jan 2018 03:15  

                      To go to the room above for the rune, just teleport from platform behind the Great Guardian. However, my main got the quest from the Bird/Arena Master but I can't the quest to close after defeating the Great Guardian and its minions.

                      • Anonymous

                        08 Nov 2017 08:17  

                        I defeated the golem, but i can't return to the hall with the birdghost. It appears the door has closed behind me. Is this part of the game or a bug?

                        • Anonymous

                          10 Oct 2017 19:33  

                          From the platform right behind the Great Guardian you can teleport up to a (spectators) area, where you can find a giant rune.

                          • Anonymous

                            03 Oct 2017 22:36  

                            This quest didn't close for me... Despite the fact that the bird infused me with some kind of power ... And now that I'm in the next chapter it says that I didn't pursue the challenge of the arena master ...

                            • Anonymous

                              27 Sep 2017 07:46  

                              Also, use your invisibility potions to move the reflectors and to activate the beam without anyone noticing.

                              • Anonymous

                                27 Sep 2017 07:43  

                                Moving the reflectors and activating the beam does not do direct damage to it. It stuns the boss and keeps its magic armor at 0 until the automatons free it. I never got to see how exactly it frees it though since I just one-shot it with an enrage+onslaught at 70 STR.

                                • Anonymous

                                  26 Sep 2017 23:43  

                                  It says that you can feel power seep into you and stay there (or something to that effect), does anyone know the impact of this "power"?

                                  • Anonymous

                                    26 Sep 2017 04:01  

                                    By the way you can reach the higher room section only with flight, tp or planar gateway are out of vision range to use. I found just a t4 thunder rune there

                                    • Anonymous

                                      26 Sep 2017 03:54  

                                      Placing a phase capacitor on the phase conductor doesn't make anything happen either. Wondering if the puzzle is glitched as I've tried everething I can think of

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