Death animation special effect?

Im trying to setup a unit that when it dies it explodes. The problem is the unit mimics the hero that sets it, and the death animation is very weak. I want a big explosion. I tried using triggers to set a special effect at point where the unit is as it dies, but nothing showed. I tried setting the art-special for the unit to the explosion I wanted but that didnt work either. I cant find any death animation or effects field either.
Thanks once again in advance, and sorry I keep asking such simple questions, but these are just killin me.

you could just give the unit revenge, and then add a simple trigger that whenever a unit dies, order unit to "revenge". This will create the same explosion you see when you click on a critter 1 too many times, in single player.

In order to get the Art-Special to play, you must call Unit-MakeUnitExplodeOnDeath(...) or Unit-ExpodeUnit(...).