Sparky Aura inserted right, however...

[Rykon-V73]

I did try to test this aura with the Firebolt spell, as that one gives it a chance to cause lightning strikes. This isn't working anymore. Is there a way to make the aura trigger, by attacking enemies?
I changed Sparky Aura to Blaster Aura and changed the 3 buffs to Blaster Aura. The '-level 1', '-level 2' and '-level 3' are only in the editor. I also changed 2 lightning models in the trigger for variety.

• Sparky aura
  • Events
    • Unit - A unit Starts the effect of an ability
  • Conditions
    • ((Target unit of ability being cast) belongs to an enemy of (Owner of (Casting unit))) Equal to True
    • ((Target unit of ability being cast) is A structure) Equal to False
  • Actions
    • -------- --------
    • -------- Here do we set sparkyunit as the unit that is being targeted, so the spell damages right unit --------
    • -------- --------
    • Set SparkyUnit = (Target unit of ability being cast)
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • ((Target unit of ability being cast) has buff Blaster Aura -level 1) Equal to True
      • Then - Actions
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • (Random integer number between 1 and 100) Less than or equal to 20
          • Then - Actions
            • -------- --------
            • -------- The condition over here, is the one that creates the chance (lower or equal to 20 is 20 % since 20 of 100) --------
            • -------- --------
            • -------- Down here, we check if the variableis below 20 (which will be 20 % chance that this action trigger), in that case we create a special effect on the targeted unit and damages it --------
            • -------- --------
            • -------- Nevermind the floating text actions, its nothing neccessary if you dont edit the spell, otherwise read the trigger comment --------
            • -------- --------
            • Floating Text - Create floating text that reads 100 above SparkyUnit with Z offset 0.00, using font size 10.00, color (0.00%, 0.00%, 75.00%), and 0.00% transparency
            • Floating Text - Change (Last created floating text): Disable permanence
            • Floating Text - Set the velocity of (Last created floating text) to 64.00 towards 90.00 degrees
            • Floating Text - Change the fading age of (Last created floating text) to 3.00 seconds
            • Floating Text - Change the lifespan of (Last created floating text) to 5.00 seconds
            • -------- --------
            • -------- Edit the damage to "your damage" here --------
            • -------- --------
            • Unit - Cause (Casting unit) to damage SparkyUnit, dealing 100.00 damage of attack type Spells and damage type Lightning
            • Special Effect - Create a special effect attached to the overhead of SparkyUnit using Abilities\Spells\Other\Monsoon\MonsoonBoltTarget.mdl
            • Special Effect - Destroy (Last created special effect)
            • -------- --------
            • -------- And here we set SparkyUnit as no unit, so we can use this spell on a new target next time --------
            • -------- --------
            • Set SparkyUnit = No unit
          • Else - Actions
        • Set SparkyUnit = (Target unit of ability being cast)
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • (Random integer number between 1 and 100) Less than or equal to 10
          • Then - Actions
            • -------- --------
            • -------- This is just the same as the first one, but this checks if the random integer is lower than 10, (which will be 10 % chance instead) and then deal 150 instead of 100 damage --------
            • -------- --------
            • -------- Nevermind the floating text actions, its nothing neccessary if you dont edit the spell, otherwise read the trigger comment --------
            • -------- --------
            • Floating Text - Create floating text that reads 150 above SparkyUnit with Z offset 0.00, using font size 10.00, color (0.00%, 0.00%, 75.00%), and 0.00% transparency
            • Floating Text - Change (Last created floating text): Disable permanence
            • Floating Text - Set the velocity of (Last created floating text) to 64.00 towards 90.00 degrees
            • Floating Text - Change the fading age of (Last created floating text) to 3.00 seconds
            • Floating Text - Change the lifespan of (Last created floating text) to 5.00 seconds
            • Unit - Cause (Casting unit) to damage SparkyUnit, dealing 150.00 damage of attack type Spells and damage type Lightning
            • Special Effect - Create a special effect attached to the overhead of SparkyUnit using war3mapImported\Lightnings Long.mdx
            • Special Effect - Destroy (Last created special effect)
            • Set SparkyUnit = No unit
          • Else - Actions
        • Set SparkyUnit = (Target unit of ability being cast)
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • (Random integer number between 1 and 100) Less than or equal to 5
          • Then - Actions
            • -------- --------
            • -------- This is just the same as the first one, but this checks if the random integer is lower than 5, (which will be 5 % chance instead) and then deal 200 instead of 100 damage --------
            • -------- --------
            • -------- Nevermind the floating text actions, its nothing neccessary if you dont edit the spell, otherwise read the trigger comment --------
            • -------- --------
            • Floating Text - Create floating text that reads 200 above SparkyUnit with Z offset 0.00, using font size 10.00, color (0.00%, 0.00%, 75.00%), and 0.00% transparency
            • Floating Text - Change (Last created floating text): Disable permanence
            • Floating Text - Set the velocity of (Last created floating text) to 64.00 towards 90.00 degrees
            • Floating Text - Change the fading age of (Last created floating text) to 3.00 seconds
            • Floating Text - Change the lifespan of (Last created floating text) to 5.00 seconds
            • Unit - Cause (Casting unit) to damage SparkyUnit, dealing 200.00 damage of attack type Spells and damage type Lightning
            • Special Effect - Create a special effect attached to the overhead of SparkyUnit using war3mapImported\DarkLightning.mdx
            • Special Effect - Destroy (Last created special effect)
            • Set SparkyUnit = No unit
          • Else - Actions
      • Else - Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • ((Target unit of ability being cast) has buff Blaster Aura -level 2) Equal to True
      • Then - Actions
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • (Random integer number between 1 and 100) Less than or equal to 25
          • Then - Actions
            • -------- --------
            • -------- Down here we check if the random integer gets below 25 (which will be 25 % chance that this trigger, as said before) and then create a special effect and damage the target. --------
            • -------- --------
            • -------- Nevermind the floating text actions, its nothing neccessary if you dont edit the spell, otherwise read the trigger comment --------
            • -------- --------
            • Floating Text - Create floating text that reads 100 above SparkyUnit with Z offset 0.00, using font size 10.00, color (0.00%, 0.00%, 75.00%), and 0.00% transparency
            • Floating Text - Change (Last created floating text): Disable permanence
            • Floating Text - Set the velocity of (Last created floating text) to 64.00 towards 90.00 degrees
            • Floating Text - Change the fading age of (Last created floating text) to 3.00 seconds
            • Floating Text - Change the lifespan of (Last created floating text) to 5.00 seconds
            • -------- --------
            • -------- Edit the damage to "your damage" here --------
            • -------- --------
            • Unit - Cause (Casting unit) to damage SparkyUnit, dealing 100.00 damage of attack type Spells and damage type Lightning
            • Special Effect - Create a special effect attached to the overhead of SparkyUnit using Abilities\Spells\Other\Monsoon\MonsoonBoltTarget.mdl
            • Special Effect - Destroy (Last created special effect)
            • -------- --------
            • -------- And here we set SparkyUnit as no unit, so we can use this spell on a new target next time --------
            • -------- --------
            • Set SparkyUnit = No unit
          • Else - Actions
        • Set SparkyUnit = (Target unit of ability being cast)
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • (Random integer number between 1 and 100) Less than or equal to 15
          • Then - Actions
            • -------- --------
            • -------- This is just the same as the first one, but this checks if the random integer number is lower than 15, (which will be 15 % chance instead) and then deal 150 instead of 100 damage --------
            • -------- --------
            • -------- Nevermind the floating text actions, its nothing neccessary if you dont edit the spell, otherwise read the trigger comment --------
            • -------- --------
            • Floating Text - Create floating text that reads 150 above SparkyUnit with Z offset 0.00, using font size 10.00, color (0.00%, 0.00%, 75.00%), and 0.00% transparency
            • Floating Text - Change (Last created floating text): Disable permanence
            • Floating Text - Set the velocity of (Last created floating text) to 64.00 towards 90.00 degrees
            • Floating Text - Change the fading age of (Last created floating text) to 3.00 seconds
            • Floating Text - Change the lifespan of (Last created floating text) to 5.00 seconds
            • Unit - Cause (Casting unit) to damage SparkyUnit, dealing 150.00 damage of attack type Spells and damage type Lightning
            • Special Effect - Create a special effect attached to the overhead of SparkyUnit using war3mapImported\Lightnings Long.mdx
            • Special Effect - Destroy (Last created special effect)
            • Set SparkyUnit = No unit
          • Else - Actions
        • Set SparkyUnit = (Target unit of ability being cast)
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • (Random integer number between 1 and 100) Less than or equal to 10
          • Then - Actions
            • -------- --------
            • -------- This is just the same as the first one, but this checks if the random integer number is lower than 10, (which will be 10 % chance instead) and then deal 200 instead of 100 damage --------
            • -------- --------
            • -------- Nevermind the floating text actions, its nothing neccessary if you dont edit the spell, otherwise read the trigger comment --------
            • -------- --------
            • Floating Text - Create floating text that reads 200 above SparkyUnit with Z offset 0.00, using font size 10.00, color (0.00%, 0.00%, 75.00%), and 0.00% transparency
            • Floating Text - Change (Last created floating text): Disable permanence
            • Floating Text - Set the velocity of (Last created floating text) to 64.00 towards 90.00 degrees
            • Floating Text - Change the fading age of (Last created floating text) to 3.00 seconds
            • Floating Text - Change the lifespan of (Last created floating text) to 5.00 seconds
            • Unit - Cause (Casting unit) to damage SparkyUnit, dealing 200.00 damage of attack type Spells and damage type Lightning
            • Special Effect - Create a special effect attached to the overhead of SparkyUnit using war3mapImported\DarkLightning.mdx
            • Special Effect - Destroy (Last created special effect)
            • Set SparkyUnit = No unit
          • Else - Actions
      • Else - Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • ((Target unit of ability being cast) has buff Blaster Aura -level 3) Equal to True
      • Then - Actions
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • (Random integer number between 1 and 100) Less than or equal to 30
          • Then - Actions
            • -------- --------
            • -------- Down here, we check if the random integer number is below 30 (which will be 30 % chance that this action trigger), in that case we create a special effect on the targeted unit and damages it --------
            • -------- --------
            • -------- Nevermind the floating text actions, its nothing neccessary if you dont edit the spell, otherwise read the trigger comment --------
            • -------- --------
            • Floating Text - Create floating text that reads 100 above SparkyUnit with Z offset 0.00, using font size 10.00, color (0.00%, 0.00%, 75.00%), and 0.00% transparency
            • Floating Text - Change (Last created floating text): Disable permanence
            • Floating Text - Set the velocity of (Last created floating text) to 64.00 towards 90.00 degrees
            • Floating Text - Change the fading age of (Last created floating text) to 3.00 seconds
            • Floating Text - Change the lifespan of (Last created floating text) to 5.00 seconds
            • -------- --------
            • -------- Edit the damage to "your damage" here --------
            • -------- --------
            • Unit - Cause (Casting unit) to damage SparkyUnit, dealing 100.00 damage of attack type Spells and damage type Lightning
            • Special Effect - Create a special effect attached to the overhead of SparkyUnit using Abilities\Spells\Other\Monsoon\MonsoonBoltTarget.mdl
            • Special Effect - Destroy (Last created special effect)
            • -------- --------
            • -------- And here we set SparkyUnit as no unit, so we can use this spell on a new target next time --------
            • -------- --------
            • Set SparkyUnit = No unit
          • Else - Actions
        • Set SparkyUnit = (Target unit of ability being cast)
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • (Random integer number between 1 and 100) Less than or equal to 20
          • Then - Actions
            • -------- --------
            • -------- This is just the same as the first one, but this checks if the random integer number is lower than 20, (which will be 20 % chance instead) and then deal 150 instead of 100 damage --------
            • -------- --------
            • -------- Nevermind the floating text actions, its nothing neccessary if you dont edit the spell, otherwise read the trigger comment --------
            • -------- --------
            • Floating Text - Create floating text that reads 150 above SparkyUnit with Z offset 0.00, using font size 10.00, color (0.00%, 0.00%, 75.00%), and 0.00% transparency
            • Floating Text - Change (Last created floating text): Disable permanence
            • Floating Text - Set the velocity of (Last created floating text) to 64.00 towards 90.00 degrees
            • Floating Text - Change the fading age of (Last created floating text) to 3.00 seconds
            • Floating Text - Change the lifespan of (Last created floating text) to 5.00 seconds
            • Unit - Cause (Casting unit) to damage SparkyUnit, dealing 150.00 damage of attack type Spells and damage type Lightning
            • Special Effect - Create a special effect attached to the overhead of SparkyUnit using war3mapImported\Lightnings Long.mdx
            • Special Effect - Destroy (Last created special effect)
            • Set SparkyUnit = No unit
          • Else - Actions
        • Set SparkyUnit = (Target unit of ability being cast)
        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
          • If - Conditions
            • (Random integer number between 1 and 100) Less than or equal to 15
          • Then - Actions
            • -------- --------
            • -------- This is just the same as the first one, but this checks if the random integer number is lower than 15, (which will be 15 % chance instead) and then deal 200 instead of 100 damage --------
            • -------- --------
            • -------- Nevermind the floating text actions, its nothing neccessary if you dont edit the spell, otherwise read the trigger comment --------
            • -------- --------
            • Floating Text - Create floating text that reads 200 above SparkyUnit with Z offset 0.00, using font size 10.00, color (0.00%, 0.00%, 75.00%), and 0.00% transparency
            • Floating Text - Change (Last created floating text): Disable permanence
            • Floating Text - Set the velocity of (Last created floating text) to 64.00 towards 90.00 degrees
            • Floating Text - Change the fading age of (Last created floating text) to 3.00 seconds
            • Floating Text - Change the lifespan of (Last created floating text) to 5.00 seconds
            • Unit - Cause (Casting unit) to damage SparkyUnit, dealing 200.00 damage of attack type Spells and damage type Lightning
            • Special Effect - Create a special effect attached to the overhead of SparkyUnit using war3mapImported\DarkLightning.mdx
            • Special Effect - Destroy (Last created special effect)
            • Set SparkyUnit = No unit
          • Else - Actions
      • Else - Actions

Is there also a way for the aura to avoid mechanical units?

 

[A]mun]

If you want to change the event to trigger upon attacking enemies, you have to change "unit - a unit starts the effect of an ability" event to "unit - a unit is attacked".
Which requires rewriting your conditions and actions.

Well avoiding mechanical units can be done easily, just add another condition "if unit is mechanical".