Gif: "Where can I find cinemagraph effects with a transparent/black/white background?"

I'm looking for cloud effects that has a transparent/black/white background so when set into multiply layer the bg wouldn't be visible. Something that can loop. via /r/Cinemagraphs https://www.reddit.com/r/Cinemagraphs/comments/ceo0mb/where_can_i_find_cinemagraph_effects_with_a/?utm_source=ifttt