so i found this really interesting slash (vfx animation) and i was wondering how i can do it
here what it looks like
u might say its a beam or a trail but i dont think it is cus trails and beam dont fade out that way and it apears before he slashes
any ways thx in advance 
It is a longer and more complicated way if you did not do it yourself, in that case you must create an NPC, and place an animation on it, they told me that you must check the tool and where the animation is, copy and paste it in the NPC, then open the Animation Editor and import it, as soon as it is loaded you must export it to Roblox, placing a Name and description, let me know if I am clear.
ohh ik how to do that but i was talking about the effects
A, the effects are placed in portions as particles, that is exported as a model.
so there multiple meshes? and they just fade thoughout the slash?
Something similar, but if you want to export them to your profiles, you must select them, group them and click on the option that says “Save to roblox” there you must put a Name, and a description.
ohh im familiar with roblox studio believe it or not im a dev for a upcomming fighting game called sentoki btw your really helped me alot thank you so much i very much apresiate it
I think you import the animation through a .fbx file.