How can I have a green lightning bolt fire out of my wand tool?

I made a wand tool, I think it looks very nice with a customMesh. Basically, I want the wand to fire an "Avada Kedavra" looking lightning out of the tip of it. First, how do I make the lightning actually look like a green lightning? Second, how do I get it to fire out of the tip of the wand? Finally, how do I get it to fire where the player's mouse is? If you could help me directly such as a team create, that would be amazing.

What you could do is use raycasting and get what the lighting would be hitting, and use particles effects along the casted ray to get the end result of lightning