I had an idea for an electric attack using blueprints to cast traces into the scene to 'feel' for objects and send bolts of electricity at them.

The blueprint is fairly simple: Randomly (but quickly), a trace is sent out in a random direction. If it hits, it sets the end-point of the ribbon particle system and spawns the sparks, if not the endpoint is somewhere less than half the distance and no sparks!

Here's the result: