Create events that fires off a coroutine from another script

Greetings, I'm making an event that does the failLevel stuff when it fires off. For that I have made a delegate

     public delegate Coroutine FailGame(IEnumerator function);
     public static event FailGame gameFailedEvent;

like so and I subscribed the appropriate function to it

 void Start ()
     {
         gameFailedEvent += StartCoroutine;
     }

It works when it is called from the same script like so:

 gameFailedEvent(WaitThenFailLevel());

when this WaitThenFailLevel() looks like this:

 IEnumerator WaitThenFailLevel()
     {
         CharacterController2D.playerDied = true;
         if (CharacterController2D.animState != CharacterController2D.CharAnimStates.fall)
         {
             CharacterController2D.currentImageIndex = 0;
             CharacterController2D.animState = CharacterController2D.CharAnimStates.fall;
         }
         CharacterController2D.movementDisabled = true;
         yield return new WaitForSeconds(0.2f);
         StartCoroutine(ScaleTime(1.0f, 0.0f, 1.2f));
     }

It works fine here. Now, I have another object that can kill the player (dangerous times I know) and I don't want to copy paste everything again, I just want it to fire off the static event made in the script above.

I DID try making the WaitThenFailGame function

 public static

and make static all my other ienumerators but I got an error named "An object reference is required for non-static field..." Hence I tried the event stuff. All well and fine, but I can't call the event from the other script because I can't pass it the function from the script mentioned. What to do now?