Gravity Warping/Black Hole Elements

I'd imagine this could look similar to the Energy Ball collection, but I think a collection of "Black Hole" energy effects, energy effects that have a centred "pull" on the surrounding footage and generate inwards, could create a nice synergy with the Energy Ball collection as well as stand separately on its own as a cool visual effect collection. It would certainly need to be distinct enough to not be easily recreated with the Energy Ball collection.