A corpse explosion spell?

I've been playing ToB and im wundering how would u make a similiar spell to corpse explosion. It explodes a corpse and damaging units around it. If u could: what spell to change, if i need triggers, or if it needs jass(i hate to jass stuf so try not to suggest it).

Well, could be:

Unit casts Corpse Explosion.

Pick a random corpse within ??? and explode.

wouldn't it just be easier to edit frost nova and put copses in the target section then just make the splash dammage around it do dammage to units and stuff?

that will not work. If it were that easy, we wouldnt need to use triggers for it. Please check for yourself before posting in the future.