A simplistic sword slash effect created for a course. This was created for the purpose of getting better with Unitys Particle System.
The full effects is broken into three pieces:
First the Sword glow created in Shader Graph with masks so it's only applied to the metal parts of the sword. The glow is also enhanched with a glowing Particle System.
Second is a trail that follows the swords arc created by a Particle System. This means this effect would also work with things other than a downward swing.
The last component of the effect are stray particle orbs that float where the trail has passed also created with a Particle system. These can easily be changed to a more fancy shape to make the effect pop more or fit a different purpose.
Sword slash effect created with Unity Particle System
It's also very easy to change what particle shape renders by creating a shader with that shape