What are centuries-old secrets worth?

I'm in a battle of wits with the powerful Potestas organization. Potestas is determined to steal unimaginable powers for its members, and I hold the key to unlocking this ambition. In exchange, Potestas promises to reveal crucial information about the source of my magic and immortality. I've been desperate for those answers for centuries.

But knowledge comes with a price. Potestas plans a human sacrifice to bring about their new world order. If I'm slow to act, they will slaughter an innocent woman and thrust a destructive new reality upon an unsuspecting world. If I do save her, I will never know my truth.

I am Merlin-and now I'll know why.