Metamorph give different hero skill

[AngkySaputra]

I want to ask something.
If I want to make a hero that have an ability.
example I use frost nova for the first skill. Then I use metamorphosis skill on my hero and the frost nova skill changed to death coil with the same level as frost nova level.
For easier example if you know the troll warlord skill "whirling axe" that changed in melee and ranged form.
I want to make something like that could someone help me?

 

[TheWhiteWolf]

First of all, don't post that here. You have World Editor Help Zone, Triggers & Scripts, and if you really have to, Request thread. This is a completely wrong forum to ask such question.
But I will answer.
You need simple GUI.
You will need these variables:
AbilityLevel (integer)

• Metamorphosis
  • Events:
    • Unit starts effect of an ability
  • Conditions:
    • (Ability being cast) equal to Metamorphosis
  • Actions:
    • Set AbilityLevel = Level of (Frost Nova) for (Casting Unit)
    • Unit - Remove (Frost Nova) from (Casting Unit)
    • Unit - Add (Death Coil) to (Casting Unit)
    • Unit - Set level of (Death Coil) for (Casting Unit) = Ability Level