I gotchu

Transient Luminous Events (TLEs) are colorful, bright, faster-than-lightning flashes that thunderstorms generate above the clouds. TLEs can take a variety of fanciful shapes with equally fanciful names. The most frequently observed TLEs are called “sprites,” like the enigmatic and playful fairies of folklore.

https://science.nasa.gov/citizen-science/spritacular/

It's actually called The Quickening and occurs when one Highlander cuts the head off of another Highlander permanently killing them. Then the victor absorbs their powers and memory via massive lightning bolts of energy which is why there can be only one.

Electroboom visited Mexico and tested his hotel room's circuit breakers

I'll make sure from next time!

"Sprites are TLEs or Transient Luminous Events, that happen abov the clouds and are triggered by intense electrical activity in the thunderstorms below," wrote Ayers in an X post showcasing the image.

Space.com article