Hello Gamedevs ;) 

I just added a new pack on my personal collection:

Animated Thunders (Pixelart)

Animated Thunders on Pixelart style.

A set of 5 different thunders.

Each thunder has  5 frames of animation sprites (Transparent Background).

Size (128pxx128px)

Tips for best results: 

-Run animation at 0,1 sec velocity each frame.

-Between frames 3-4 you can apply a white flash screen (covering all screen 0,1 sec) or either between those frames you can inverse all colors of the screen as a flash (0,1 sec).

Enjoy GameDev ;)