Using a negative valued Tranquility that aims enemys and healing yourself by 20xUnits in range of yourself owned by enemy... but it wouldn't show the green thing of life steal
And i don't know if Tranquility works with negatives.
tranquility wouldn't work, because you wouldn't get the necessary animation.
try creating dummy caster units with a trigger, spawned at the location of your hero, then issue order for them to cast your version of Life Drain.
You would then need a seperate action to add life to your hero using some pretty crazy math. You could make it as simple or as complicated as you want. (i prefer the former).
The only problem is: would the dummy casters be close enough to your hero to make it look like he/she is casting the spell?
Try This Trigger, Though IT's Missing Some Things That Either You Will Have To Find Or Someone Can Help Out.
Untitled Trigger 001
Events
Unit - A unit Begins casting an ability
Conditions
(Level of Life Drain for (Triggering unit)) Equal to 1
(Ability being cast) Equal to Life Drain
Actions
Lightning - Create a Drain Life lightning effect from source (Position of (Triggering unit)) to target (Position of (Random unit from (Random 1000000000 units from (Units within 500.00 of (Position of (Triggering unit))))))
Unit - Cause (Triggering unit) to damage circular area after 0.00 seconds of radius 500.00 at (Position of (Triggering unit)), dealing 100.00 damage of attack type Chaos and damage type Unknown
Wait 0.50 seconds
Unit - Cause (Triggering unit) to damage circular area after 0.00 seconds of radius 500.00 at (Position of (Triggering unit)), dealing 100.00 damage of attack type Chaos and damage type Unknown
Unit - Set life of (Triggering unit) to (Percentage life of (Random unit from (Random 1000000000 units from (Units within 500.00 of (Position of (Triggering unit))))))
Wait 0.50 seconds
Unit - Cause (Triggering unit) to damage circular area after 0.00 seconds of radius 500.00 at (Position of (Triggering unit)), dealing 100.00 damage of attack type Chaos and damage type Unknown
Unit - Set life of (Triggering unit) to (Percentage life of (Random unit from (Random 1000000000 units from (Units within 500.00 of (Position of (Triggering unit))))))
Wait 0.50 seconds
Unit - Cause (Triggering unit) to damage circular area after 0.00 seconds of radius 500.00 at (Position of (Triggering unit)), dealing 100.00 damage of attack type Chaos and damage type Unknown
Unit - Set life of (Triggering unit) to (Percentage life of (Random unit from (Random 1000000000 units from (Units within 500.00 of (Position of (Triggering unit))))))
Wait 0.50 seconds
Unit - Cause (Triggering unit) to damage circular area after 0.00 seconds of radius 500.00 at (Position of (Triggering unit)), dealing 100.00 damage of attack type Chaos and damage type Unknown
Unit - Set life of (Triggering unit) to (Percentage life of (Random unit from (Random 1000000000 units from (Units within 500.00 of (Position of (Triggering unit))))))
Wait 0.50 seconds
Unit - Cause (Triggering unit) to damage circular area after 0.00 seconds of radius 500.00 at (Position of (Triggering unit)), dealing 100.00 damage of attack type Chaos and damage type Unknown
Unit - Set life of (Triggering unit) to (Percentage life of (Random unit from (Random 1000000000 units from (Units within 500.00 of (Position of (Triggering unit))))))
Wait 0.50 seconds
Unit - Cause (Triggering unit) to damage circular area after 0.00 seconds of radius 500.00 at (Position of (Triggering unit)), dealing 100.00 damage of attack type Chaos and damage type Unknown
Unit - Set life of (Triggering unit) to (Percentage life of (Random unit from (Random 1000000000 units from (Units within 500.00 of (Position of (Triggering unit))))))
Wait 0.50 seconds
Unit - Cause (Triggering unit) to damage circular area after 0.00 seconds of radius 500.00 at (Position of (Triggering unit)), dealing 100.00 damage of attack type Chaos and damage type Unknown
Unit - Set life of (Triggering unit) to (Percentage life of (Random unit from (Random 1000000000 units from (Units within 500.00 of (Position of (Triggering unit))))))
Wait 0.50 seconds
Unit - Cause (Triggering unit) to damage circular area after 0.00 seconds of radius 500.00 at (Position of (Triggering unit)), dealing 100.00 damage of attack type Chaos and damage type Unknown
Unit - Set life of (Triggering unit) to (Percentage life of (Random unit from (Random 1000000000 units from (Units within 500.00 of (Position of (Triggering unit))))))
Wait 0.50 seconds
Unit - Cause (Triggering unit) to damage circular area after 0.00 seconds of radius 500.00 at (Position of (Triggering unit)), dealing 100.00 damage of attack type Chaos and damage type Unknown
Unit - Set life of (Triggering unit) to (Percentage life of (Random unit from (Random 1000000000 units from (Units within 500.00 of (Position of (Triggering unit))))))
Wait 0.50 seconds
Unit - Cause (Triggering unit) to damage circular area after 0.00 seconds of radius 500.00 at (Position of (Triggering unit)), dealing 100.00 damage of attack type Chaos and damage type Unknown
Unit - Set life of (Triggering unit) to (Percentage life of (Random unit from (Random 1000000000 units from (Units within 500.00 of (Position of (Triggering unit))))))
Lightning - Destroy (Last created lightning effect)
The Missing THing Is HOW Much Life Is Going To Be Taken. Also, Another Thing Is That If You Want A Specific Number, You Would Have To Make The "Damage Area" Thing To Only Hit The Ones That Got Hit By The Lightning Effect. Which I Also Have NO Idea How To DO. Also, How To Make It Specific On How Much Life You Want Taken Is Also A Pain I Don't Know How To Do. But This Could Be A Base Trigger for A Trigger You Can MAke Yourself. Just Keep These Problems I Placed In Mind.
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.