Restart Event/Event Group after it has finished

I made a Event with Attacks for a Boss. Now i want that if the Event ends, it must Restart. I mean if all the 3 Attacks of the Boss are done, he start from beginning with the first Attack again. How do this ?

use a variable

so the boss starts at var=0; boss does something, then that ends, and goes to var=1, and so on.

and when it has performed his last action set var=0 again