[Trigger] need some help making a spell

[Rhollu]

I am trying to make Rukia Kuichi's Hakuren(White Ripple)
This is a video showing her Hakuren:
http://www.youtube.com/watch?v=x9l3zgBC-EM

This is what i have doned so far:some basic triggers(yea it's cinematic-like)

I want this ability to works like Crypt Lord's Impale.(Froze enemies in a line if they are hitted.)
Well,there's one slight problem...
I dont want the ability to be [Triggered by Clicking on the Ground] like the normal impale ability.
I want it to be like [Triggered by an ability with no target] like Troll Berserkers' Berserk,but if I do this,Hakuren will be unleashed at random direction.I want to find a way to make it able to be unleashed at the direction Rukia is facing.

The map is here,if you want to help me,you can download the map.
Thanks for your time.

 

[Element of Water]

Learn to speak proper, understandable English and someone might help you.

 

[Hijax]

base your ability off channel. have the Hakuren dummy cast impale at the point of the caster, offset by the range you want in the direction of the casters facing.