Help w/ editing impale's special effects

I'm trying to edit the spell 'Impale' to be more descriptive of the Crypt Lords racial traits by making it look more like web. I want it to work the same, but instead of pushing targets into the air w/ stalagmites, I want them to be wrapped in gobs of webbing.

I've tried changing the air time of the units to 0, but they still do this graphical error where they either disappear for a breif moment or turn pale. Should I use another move, like Shock Wave, and use triggers to get the effect? Or is there something easier to do?

Also, when I change the buff to web (ground), it's so tiny. This isn't a big deal, but if there's a way I can make it larger I'd appreciate input. I don't know anything about changing an effects inherent graphic.

Thanks.

well the impale skill only has one animation so you probably couldn't take out just part of it. base it off shockwave and put in the impale effect and make a trigger for the web part.
event- unit gets hit by impale
action- pause unit and special effect web

Thanks for the feed back. I did it off of shockwave, but it still had that ground distortion effect. Maybe I could make it off of Carrion Swarm?

Or Breath of Fire, or Crushing Wave... well, I'm sure there's more but you get the point. ;)

I'm having some trouble following the trigger.

I have:
-Event
A unit is attacked.

-Condition
Here's where I'm stumped

-Action
Special Effect- Create special effect at (Position of(Triggering unit)) using Abilities\spells\Undead\Web\WebTarget.mdl

Unit-Pause (Triggering Unit)

Help would be appreciated. Thanks.