Sprites are high atmospheric electrical discharges often associated with lightning strikes in thunderstorms, but they go up to the edge of space instead of down. They are ginormous and monstrously powerful and still very poorly understood by science(they blink in and out faster than normal lightning, almost too fast for the eye to catch, but they are showing up in photos and videos more in the last two decades or so). They are red because they are exciting the nitrogen in the atmosphere, they stretch upwards of 50 miles into the sky. Click that "some sprites" in red, it's a link to a 5 or 6 minute video about them. There is a whole class of upper atmospherics electromagnetic phenomena that they never have Storm use. They would look even better in full CGI. Hey MCU, it's all you!!!