Lightsaber Disruption Effect

Does anyone have any idea of how to make Kylo Ren’s Lightsaber it’s not like all the other lighsabers it has a moving upwards effect and sparks randomly fly off of it? How would I go about making something like this?

Here is a link to a video that was created in Blender. Does anyone now how to do this? https://www.youtube.com/watch?v=qL-bbzyJeGM