What's a good question to ask (as well as a thesis) related to the supernatural in Hamlet & A Midsummer Night's Dream?

In considering the supernatural in
Hamlet and in A Midsummer Night's Dream, you
will want to find some common thread that runs through the element of the supernatural
in both plays.  Consider, for instance, how the supernatural world interferes with the
natural world.  In Hamlet, for instance, it is the appearance of
the ghost of his father, the murdered king, which ignites Hamlet's terrible melancholy
and the change in his relationships with his mother, Gertrude, as well as his friends
Rosencrantz and Guildenstern, and his love
Ophelia.

Likewise, in the comedic A Midsummer
Night's Dream,  the supernatural, the world of the fairies, initiates some
hilarious consequences from the appearance of the humans in the forest.  Nevertheless,
the fairies assist in making life more orderly for the humans.  So, consider what part
the supernatural plays in Shakespeare's comedy and in the tragedy
Hamlet and find some common denominators that you can write
about.