When an

Exit Key

is used on it, it destroys the key to widen to a great size. At the same time, it freezes everything in the view of the key user, to then engulf said user and any allies in range.
After taking in whatever it might, all said things are placed at a random position in the field.

If a

Heirloom Exit Key

is used, then anything that entered it also has a 1% to mutate or become gifted!