(Help) creating a inkstroke/brush "slash" attack particle effect?

Hey everyone! I would like to use Cascade to create a particle effect that looks like this (Black Desert):

When the character slashes, you can see the particle effect coming from the sword (looks like a brush stroke). How would you approach creating it? I’m not looking for a tutorial or anything (unless something similar already exists) but any tips would be great.


Thanks for the video! Helps a lot