HP instead of Mana

[Fimbus]

Right now I'm making a hero for the map Combowhore and I got the idea that the hero should use his HP instead of his Mana.
I thought I would be able to make it easily but(!) it wasn't as easy as it seemed.
In the start I thought of making a dummy cast a spell that damaged the hero, but then I remembered Spell Resistance.
Then I thought of just making the dummy attack the hero, but even with Chaos damage it will be reduced by the armor.
So my question is; How do I make the damage pure (not affected by anything)?

 

[Squiggy]

• Events
  • Unit - A unit begins casting an ability
• Conditions
  • (ability being cast) Equal to ~your ability~
• Actions
  • Unit - Set life of (Casting unit) to ((life of (Casting unit)) - x)

Whereas x is the variable defining the amount of hp being needed for using the ability.
This way you can upper/lower the hp for each level of the ability (if it has) by adjusting the variable.

Another way to do this should be following:

• Events
  • Unit - A unit begins casting an ability
• Conditions
  • (ability being cast) Equal to ~your ability~
• Actions
  • Unit - Cause (casting unit) to damage (casting unit), dealing x damage of attack type Chaos and attack type General

If you want the hero/unit not to use his/her ability if his/her hp are at a certain level, use the condition

• Conditions
  • (Life of (casting unit)) is greater or equal to y

 

[Fimbus]

Okey, thanks for the help.
Eat some +rep!

 

[Need_O2]

damage type of Unknown (or spirit link) and attack type of something will do %100 damage to everything like chaos

 

[Fimbus]

Thanks
You'll have to eat some +rep too!

 

[NoNZealot]

You can also make him deal damage to himself, the same thing.
Unit-Deal damage to event-response caster of ability X dmg etc.