Flamethrower spell....throwing while moving

I thought about this:

Trigger 1:
Player cast ability

if ability = flame thrower "on"

turn trigger 2 on

Trigger 2:

Create x dummy caster at position of triggering unit and order them to move to target unit (those dummy casters are unselectable flames and have

Trigger 3:

every 1 secodnds of game time

create special effect "flame" at unit "weapon"

ok.. ....What's the question/problem ?

Does this work? Is there a better solution to get this spell ?

Of course it is, you want to make it in GUI, right?
Not such a good idea for a repeating action.
I recommend JASS and don't use such a high repeating time, cause it won't look smooth.
But it will also work when you make it in GUI, but with the limits.

Phoenix fire is probably a better solution.