system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] How close was Dr. Strange to dying on that mountain with the sling ring? Was there any other ways for him to return/escape? Do we know how many people were tested in this way?
gpt
Well he was on the top of Mount everest, not really any way to escape that. And as they said when he got there, he would freeze to death in a few minutes.

We don't know how often she does this, but presumably not often, as mordo reacted with "oh no not again" implying she doesn't so this often, and he doesn't approve of it.