On your signal, the Exarch lifts the ward, and together you stride into the Crystal Tower to meet with Elidibus.
※In the event that you leave the instance, you may reenter by speaking with the Crystarium sentry.
As you wind your way up through the tower, your adversary's incessant summonings take an ever-heavier toll on your companion, eventually bringing him to his knees. His rapidly crystallizing body no longer able to keep up, the Exarch vows to hold the spectral warriors at bay while you go on alone─and so you do, hoping all the while that you will see him again.
Some time later, you gain the tower's uppermost level, where you come face-to-face with Elidibus at last. In defiance of his fading memories, the Ascian clings to his name and duty, and takes unto himself the power of yet more heroes to arise as the Warrior of Light incarnate. In this puissant form, he unleashes a burst of all-consuming radiance at you, only to look on agog as you emerge unscathed. In your hand shines the constellation crystal you received from Hythlodaeus, while around you an array of arcane rings stand ready to summon champions from beyond the rift to your aid. The odds thus evened, you steel yourself for the decisive battle with your oldest foe.
※The Seat of Sacrifice can be accessed via the Duty Finder.
The battle unfolds with neither side willing to yield an ilm, but it is ultimately you who delivers the final blow, bringing Elidibus to his knees. Defiant even in defeat, Elidibus proclaims his own immortality, only for the Exarch to arrive and play his promised trump card. Harnessing the Crystal Tower's vast reservoir of energy, he strips the primal of his power and entraps his scattered essence. Before the Ascian fades into oblivion, however, you choose to restore his lost memories to him, granting him a semblance of peace at the last.
It is, by any measure, a historic victory, but one not without cost, for it soon becomes clear that the Exarch's exertions have taken a fatal toll. As what remains of his flesh turns into crystal, he begs one last favor of you: a journey together. Comforted by your answer, he entrusts to you his mind and memories before commencing his silent vigil...
Rejoining your other comrades in the Exedra, you learn from Ryne that all has returned to normal in Norvrandt. Yet something clearly weighs upon her mind...
And finish it we shall. For no hero our foe could summon to his side shall ever compare to you! And...as for me...well, no ally you could summon to your side will ever try harder, that much I swear.
So come, my friend! Let's finish this─once and for all!
You know, it wasn't so long ago that I watched you seal the place up.
...Elidibus spoke in similar terms, you say? How curious.
To answer your questions, then, I made my choice for reasons which seemed obvious to me, but may not to any other.
There were the expectations I placed upon myself before beginning my slumber. And the expectations of those who roused me.
Of course, I had the choice to turn my back on the lot of it. But in the end, it was no choice at all.
I cherish the time I spent with you and the others. What I wouldn't give to return to those halcyon days...
Chasing ancient secrets, overcoming trial after trial with the aid of like-minded comrades...
And what remarkable comrades they were. In such company, I felt as if I were a character in the epic tales that had stirred my heart as a boy. As if my dream had come true...
It hadn't, of course, for I was no hero. Neither then nor after. Though the world to which I awakened, and the First were beset with myriad problems, I rarely knew how best to play my part.
There was, however, one thing of which I was certain: that I could not bear to let those dear to me meet a tragic end.
The Waking...Sands? ...Yes, that was the place. The place I first made myself known to you and yours.
The seventh Rejoining had left the realm listing dangerously towards Darkness. And events were unfolding that threatened to push it over the brink.
Thus did I approach you, in my capacity as emissary, thinking that you would make a useful pawn...
But I was wrong, and for my misstep did Lahabrea and Emet-Selch pay the ultimate price. Leaving me the last of the unsundered.
My remaining brethren, fragmented as they are, cannot hope to see our mission to its end. It falls to me alone.
Defeat is not an option. I will strike you down. I will resurrect Lord Zodiark. And I will bring back those who sacrificed themselves to call Him forth.
Though it take a thousand thousand years, upon my honor as Elidibus, emissary of the Convocation of Fourteen, I will see this done.
This pain, this torment...is nothing! No more than must be suffered to deliver the world from its doom! No more than any of you malformed creatures have known!
Even should you lose all that is dear to you. Even should it cost you your life...
You bear the burden and fight on, kicking and screaming until your last breath is spent!
Elidibus. So fixated were you on my memories of the future, you failed to heed the lessons of the past.
Your obsession blinded you to the true nature of this tower ─ this beacon of hope for mankind.
Created to serve as a reservoir for the limitless energy of the heavens! To harness and bind the boundless ─ not unlike white auracite!
Your ill-begotten power, obtained by exploiting that which is best in us... I shall have it, your soul and all!
The Crystal Tower glows brightly while the Exarch casts the binding spell. During it, his body continues to crystallize, but the player assists him. Elidibus's primal form dissipates, along with the starshowers. Elidibus now has the form of a white robed Amaurotine with a red mask. He sees the crystals of the Convocation members on the floor.
Steady now, and listen. I told you before that I had a plan, and that when all was said and done, I would ask a favor of you.
We have averted the Eighth Umbral Calamity. Found a way for everyone to return to the Source, and...last but not least, we have secured the future of all the people of Norvrandt. We have won, my friend.
So I hope you'll forgive me this moment of selfishness. And...while I wouldn't want you to feel obliged...
Promise me you'll take me on your next adventure. A journey. Together. That's all I ask.
My friend. With you, my mind and memories shall travel to the ends of the world and beyond. But in this place shall my body stand immovable.
May it serve as an undying promise, not only to those who looked to me for leadership, but to any soul who has known despair, that hope is everlasting.
The Exarch's spirit vessel glows. His body then crystallizes entirely. The Scions and Ryne arrive.
Sometimes, I wish that I too had been gifted with the Echo. Then I might see what you have seen and glimpse into your heart without the need for words.
Shortly after you left, we observed that our enemy's ranks were no longer being replenished ─ presumably when your absence was noted. So we polished them off and came as quickly as we could.
...Which is to say, not quickly enough. But then you had the Exarch for company, didn't you, and you could ask for no better than that.