Roll The Bones ability from WoW

[HolyWillRise]

Hello everyone, i am wondering if its possible to make this ability work and how? Can we just put a trigger that picks a random number between 1 and 10 everytime we click/use the ability and then for each specific number to gain different buff?

 

[Uncle]

Events:
A unit starts the effect of an ability
Conditions:
Ability being cast equal to Roll The Bones
Actions:
Create a Dummy unit
Set Variable Roll = A random number between 1 and 3
If Roll = 1 then Add Ability 1 to Dummy -> Order Dummy to cast Ability 1 on Triggering Unit
If Roll = 2 then Add Ability 2 to Dummy -> Order Dummy to cast Ability 2 on Triggering Unit
If Roll = 3 then Add Ability 3 to Dummy -> Order Dummy to cast Ability 3 on Triggering Unit

 

[HolyWillRise]

Events:
A unit starts the effect of an ability
Conditions:
Ability being cast equal to Roll The Bones
Actions:
Set Variable Roll = A random number between 1 and 3
Create a Dummy unit
If Roll = 1 then Add Ability 1 to Dummy -> Order Dummy to cast Ability 1 on Triggering Unit
If Roll = 2 then Add Ability 2 to Dummy -> Order Dummy to cast Ability 2 on Triggering Unit
If Roll = 3 then Add Ability 3 to Dummy -> Order Dummy to cast Ability 3 on Triggering Unit

Thank you sir! ;3