You went on an expedition to claim the source of immortality with your army, yet you failed and perished to an unknown entity. Through strange circumstances, you wake up, greeted by your men in a corpse pile with Vrael next to it

Vrael: "Playing dead were you? Shame it's always the cowards that survive."

Vrael sighs

Vrael: "Considering the fate of your men, I thought I'd do them a service... Go back to Vados. You've an obligation to their families now."

You head direction adjacent from Vrael and feel as if you're burning up inside. That's when death appears in front of you, coincidentally as you describe it to him

Death: "Better get used to it. You remember our deal, don't you? This contract will resurrect you in service to me. In return... You must do something for me. What exactly? Give it time, for now, just sign here, in blood of course."

Death: "It will take some time to familiarize yourself with your body and what you're capable of. Until you do I await you at Central Sanctuary."