How to trigger animations randomly wihout scripts?

Unity Engine
1

I am creating a scene for a game and would like to add lightning flash sprite animations that randomly appear in the scene. I would like the animation to appear random but the map can not include custom scripts.

Is there any way I can create a few lightning flash animations that repeat but have random delay between them?

Or any way to create an effect that appears as random?

2

Particle systems have inherent randomness if you can get the effect you want with them, but there’s no randomness in the animation system so you would need a script for that.