How to make a skill with target only target self?

[Razwerd]

Hi guys! I need to make a skill like Bloodlust for my map but I want it to be casted on self the moment you click it and not select the target.
I'd really appreciate any help you provide!

 

[WhiteDeath]

You can use the berserk ability.

 

[Razwerd]

Thanks man didn't think that!