Life binding

Life binding

How can I make a spell that allows me to make a unit bind another one so when the casting unit gets damaged the target unit of the ability being cast gets x multiple of the casting unit's damage

there is some ability, isnt it? Tauren spirit walker. Try to modify it

I did

I did modify it and instead of making 50% of the damage being distributed amongst the binded I gave it a 100% but doesnt work