Spoiler: If Mistin or Trent use the memory orb (repost for easier reading)
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When you touch the orb, you feel like you are looking through someone's eyes at a very tall man with a long grey beard. You're in the same room you were in just now, with the lights and the viewing station. But there are no brick walls and only a few marbles behind you. You're not entirely sure how you know this, but you know whose eyes you are using: you are Number 3. And it's not just his eyes. You feel and know a few other things. You are tasked with surveillance. You use the viewing station to keep tabs on whoever this man, the master, Abraxis, tell you to watch.
He is about to give you a new order. You await this eagerly. More purpose. More reasons to exists.
"Unit Number 3, my dear Number 3. You know, you were always the most useful one. When I started out I thought it'd be the druid. But I was wrong. You may quite literally be the best credits I've ever spent."
You swell with pride. The master is pleased. But then he puts his hand on your shoulder, and looks down into your eyes over his glasses.
"But I'm afraid this is where the road might end."
Your emotions, once so simple, now start racing. What does he mean by that?
"Truth is, you're special. Exceeded your programming and all that. But you have seen too many things. It is ironic, but I can't take you with me. I have decided to leave the other constructs here as well. Each with their own objectives. Even the golem, for what that's worth. It should be a few decades before the realm goes critical. I may be able to work something out by then.."
For a few moments his eyes trail off. He seems lost in thought. Then he looks back at you and continues.
"Anyway, for now we might as well keep the charade going. No sense ruining all of this. If it's gone it's gone, and if not we won't have to start over. So, Number 3. I'm giving you an additional objective until my return. In addition to your regular surveillance work, you are to make sure nobody learns I am truly gone. Take whatever measures you feel are needed."
He squeezes your shoulder before letting go and says farewell in words the real you doesn't know, but you know what they mean.
"Until I return."
Then he speaks a magical word and disappears. You walk over to the console and sit down. You take a long hard look at your keyboard, and then set it to "Draconic" before mouthing yourself.
"Until I return"
Fully aware that no-one in the demiplane must ever know.