While most of you patrol and hide in the fog, Maggie works on the machine. She finds that one of the red crystals has already been replaced with a slotted one like the one you found, and she finds a crystal like the one you found inside it next to the dead metal man. She puts it in, holds on to it, and concentrats.
She removes it and says "Its a translator. The device can be controlled mentally, but only by someone who can think in Sarkrith. This seems to convert Sarkrith to another language. I recognize bits and pieces...It might be an ancient version of some existing language, actually, Perhaps, uh, bah, I'll think about it later. At least this might show us how a translator would work."
She then finds the Kryptgarden base. She did the necessary calculations ahead of time based on the settings and results from last time. Regressing time, it becomes clear that the base was being used for what you thought...developing and buildings new types of fiendpires and gathering up an army. It would take a very long time to count them. The portal seems to be used to deliver prisoners. All are humanoid, but their species and apparent ethnicities vary widely. They may be form all over the world. They are restrained, bitten either by a fiendpire or a strange wand with a mouth at the end of it, forced to drink a red substance, fed to the energy-draining pillar, then sent to the cocoons. Teams of wizards experiment in labs on new forms of the creatures. Kurin comes and goes with teams of fiendpires. There also seems to be various facilities in which they make weapons, clothing, and othe ruseful items, with raw materials brought in through the portal.
Maggie the switches in the crystal found in the base. The mitheril rings that Cronos added at the top of the pillars activate and create a grid of energy like you saw before.
The device shows a dark room. On one end is a throne with a man sitting on it in a black robe. He is deathly pale, with a long face and a huge mouth, and purple eyes with big black irises, such that his eyes look like holy symbols of Shar. On the other end is a very large man and a spectral one. The big one has shoudler-length grey hair, slightly wrinkly skin, and light grey eyes. Though he appears somewhat old, he also appears extremely fit and muscular, and holds a scythe in his hands. Next to him is a translucent wizard in blue robes. He has small horns and very sharp features, indicating at least a partially fiendish heritage.
In a booming voice, the large man says "I am Cronos, Master of Potentiality. You should have by now received orders from your mistress. You will do my bidding, Namer. I can see all that is or was possible. I kow everything about you. You are the mightiest practicioner of truename magic in the multiverse, given much of your powers by Shar herself. You have caused the fall of empires, the most destructive of plagues, even the Time of Troubles, then erased yourself from the timeline by forging yourself a new truename and obliterating your old one. The universe responds by splicing other possible realities with similar outcomes into the primary reality. I know because it is these realities, which exist to protect the timeline from meddling, that I manipulate in my magics. See, Namer, I can see the realities in which you haven't erased yourself. You have betrayed many in your time, but you can never betray ME. Now, come, conceal our plans, and provide us with the knowledge and power of your mistress."
The image moves to show the workings of the Kryptgarden base, except with the Namer leading the experiments. It also shows him performing odd rituals probably intended to keep their activities secret. It becomes clear as well that he is uniquiely-suited for word-magic: he has two tounges.
The images keep changing, showing various destructive deeds of The Namer throughout history.
The final image is the Namer changing his face and body and appearing in an office full books. It seems that he is a professor at the Waterdeep Bards College...you recognize him, becuase it seems he was the one attacked by the leader of that crazy Rashemi cult you met at sea, but survived.