I have a trigger spell based on the channel ability that looks like this:
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Events
- Unit - A unit starts the effect of an ability
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Conditions
- Ability being cast equal to Rage
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Actions
- Set Caster = Casting Unit
- Set Target = Target unit of abiltity being cast
- Set Random = Random integer number between 2 and 3
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For each (integer A) from 1 to Random do actions
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Loop - Actions
- Unit - Cause Caster to damage Target dealing 100 damage of attack type spell and damage type normal
- Wait 2.00 seconds
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Loop - Actions