Whats wrong with this trigger ??

[omniversal]

this trigger is made for cast autofrostnova when attacking(you can see in the "Testz" map ) !!! In the "Testz" Map , when i attack the monster it will cast autofrostnova and nothing wrong but when i move the autofrostnova trigger to "X hero F-day 4.9" it become error because sometime when i attack , i will die too along with the autofrostnova cast out and it will often happened when my stat reach a thousand.

For more understand you can test play the map and you will know where is wrong

Note : To cast autofrostnova you need an item named "Frost Orb" in "Testz01" map and "FireGod Artifact" item in x hero siegie > BUy it at the castle. To see the trigger please open the map at World Editor