How do i make a beam/laser effect?

i'm looking for a way to make a simple continuous beam/laser effect

If you either have a unit with a fast attack speed and a modified "Lightning Attack" ability attack the location that you want to "beam" to, or modify Finger of Death to have 0.00 lightning art duration and Finger the target, it should make the effect you want.

Actually, a modified Life Drain with dummy units works better.

Depends if you want the unit to be channeling or not, I reckon.

If you do use the quick firing attack method, remember to set the unit's animation times to 0, otherwise it'll wait for the animation to finish playing before it starts the next attack.