Once I have a soldier capable of using it (max level Psi power + Psi armor), clicking on the Gollop Chamber icon shows me a big fat warning:
What happens from this point on? Is there anything I should know before I choose a soldier and activate the device?
Best Answer
Obviously, this is going to be full of spoilers for the endgame. I'll try to break them down so that you can minimize your exposure, should you wish. I'm not going to go into heavy details about story (except where noted), just how the gameplay mechanics shift.
After you use the chamber, the effects at the base are:
The soldier who uses the chamber:
When you accept the mission:
After the mission (massive story-related spoilers!):