Very Nooby Problem(s)

So this is my problem (surprise surprise):

I need to make an ability, wich is based on Cluster Rockets, but the damage dealt is:
Level 1: 250 and it should launch 5 rockets
Level 2: 500 and it should launch 10 rockets.
This is indeed nooby, but every time I use it at heroes, they lose the amount of hp they should to lose. But when I use it on units, they take low dmg.

Another problem, wich ain't so nooby:

I need an ability, wich is based on healing wave or chain lightning, but if it hits Undead it deals ### Damage and if it hits friendly it heals for ### points.

More problems:

Need to make aura wich Increases damage, attack speed and armor.
And another aura wich increases Hp reg and Mana Reg

If I figure more problems I'll post em for sure XD
And yes, I know that Healing Wave thing must be triggered, but I can't do it (I have tried) so if someone wiser than me can help me, then ty.

These are all general questions, except for the chain heal/damage which would obviously require to be completely triggered.

I can answer only the auras off the top of my head: 1. is a combination of endurance, command and devotion aura, 2. is a combination of unholy aura and briliance aura. You would have to give all three auras to the hero, but that would give you 3 icons. To avoid this, just make one of the auras the one that will show it's icon and the tooltips for all three, and put all other auras into a spellbook type ability, give that ability to the unit, and disable it for the player. A disabled spellbook won't show it's icon, but passive abilities inside it will still work. The only downside of this is that you get seperate buffs on the units under effect of all 3 auras. If you want to avoid that, the only thing you can do is trigger the aura as well.

or just give all of the three abilities the same buff. which would work aswell.

EDIT:

on second hand, dont listen to me. I just tried with an AM with Devoition aura + unholy aura with the same buff.
i got critical error when i started the map.
though i know it works with regular spells. (ie bloodlust and inner fire)

All right I'll try those.
But someone could make the Healing Wave thing to me?

I have tried to make these things work, and they still don't work. I could use tirggers in auras, but the problem thing is that is an evnet for units taht became an effect of aura? Dunno actually.. someone tell ty

Periodic Event - Every 1 second of game time.

Don't tell lies.