Trigger spell help

[Zerathus]

Hi guys it's me again.I have another problem with my custom spells.Now i want to create pausing spell which would damage target x agi + add special effect.I done it but spell is "bugged" and doesn't have CD.
my trigger
Could you please help me?

 

[defskull]

Change the Event to:

• Unit - A unit Starts the effect of an ability