Would this work?

I'm trying to get the roots in entangling roots to go away and make it look like the purge buff instead. I thought I could change the entanglingroots.mdx to just a blank one(this is where I need help I dont know how), then just use triggers to make the purge. So how do I make a blank .mdx? and if this isnt possible how could I make it work?

use the spell editor instead... way easyer...

just change the art to what u like :D

But the roots dont go away and if I change it to purge there it dosent last, that needs to be added with triggers.

So how can I make a blank .mdx file?

I'm with Chemo. Use the Ability Editor module, create a custom ability based off entangling roots and set its art to none... Much much easier than modeling.

Although, if you REALLY need a blank model, set the model to "Doodads\Terrain\LOSBlocker\InvalidFileOnPurpose.mdl" (It's also under Units as "Zone Indicator")