Jonny Holloway made a recut of the trailer for Harry Potter and the Order of the Phoenix using the music and styling of the trailer for Star Wars: The Force Awakens, and somehow it really, really works.
Let's set the mood...
You've got your requisite dark lord...
...And flying heroes!
Wands vs. lightsabers, ready for war.
And, of course, the classic battle of good vs. evil.