I got a Question about this spell

I got a Question about this spell

Ok I Makeing This spell Which Is The Diablo 2 Barbarian's Whirlwind. Ok Heres What i got That the Barbararian Does Starts Casting Spell Whirlwind(Bladestorm). But I want it Cast Howl Of Terror on The Barbarian to Simulate the Negitive attack Damage it gives But at level 3 Whirlwind Increases by 25% which i now how to Do But I cant get it to Cast Howl Of Terror at same time when He Casts Whirlwind can someone Help me?

You forgot about dummy casters. What you could do is check the level, then give them a dummy powerup which has the ability of Howl of Terror

Do a nice FOR which keeps pumping up dummy units. Give them Howl of Terror, creeate them at position of casting unit, order them to cast Howl of Terror and put 1 second Expiration timer. Than should do it.

ahh Thx now i can Finish my Spell thank you!

i got the dummy unit and stuff But I cant Make THem Order To Cast Howl of Terror. I've did this So far|||| Whirl Wind Effect
Events
Unit - Barbarbian 0000 <gen> Begins casting an ability
Conditions
(Ability being cast) Equal to Whirl Wind
Actions
Unit - Create 1 Dummy unit for (Owner of (Triggering unit)) at (Position of (Triggering unit)) facing (Position of (Triggering unit))
i've tried Pick Every Type of Dummy Unit But I dont know How To do action Of it...