"Lightning Fury" Triggered Spell

Im trying to make a triggered spell that when you have the buff Lightning Fury, everytime a unit attacks it creates a Forked Lightning effect from the attacked unit. What i cant figure out is how to make the FL spell to target a unit and in the right direction.

well you have to create a dummy caster with the forked Lightning, make it cast forked lightning on the attacking unit and add an expiration timer with kinda .3 seconds to it.

to make it cast forked lihgtning you have to give it the order forked lightning targeting the attacking unit ... if it's a custom FL this will work anyway if the unit is ordered to cast the normal forked lightning...

was that what you needed to know?

or do you only want a single lightning to hit the attacker? than you can either change the forked lightning number of targets or give the dummy caster the lightning attacks ability and a spell damage type attack and order it to attack the target. that's easier and works better than creating a lightning special effect without a real spell or a lightning attack.