Containing Nightmare Moon proved effective with the right tools. Her large and dark soles subjected to enchanted rune markings that also denoted her permanent imprisonment. Her soles endlessly assaulted by tiny claws, pinchers, brushes, and so much more.
 
No day was the same in terms of the tools used. The combinations and speeds and intensities where always different, always catching the mare off guard.
 
How could one even start to plan an escape if one was always clouded by endless tickling?
 
Nightmare Moon was forever doomed.