#1
Trigger
Events
Unit - A unit Starts the effect of an ability
Conditions
(Ability being cast) Equal to Your Ability
Actions
Set Chance = (Random integer number between 1 and 2)
If (All Conditions are True) then do (Then Actions) else do (Else Actions)
If - Conditions
Chance Equal to 0
Then - Actions
-------- then actions --------
Else - Actions
-------- else actions --------