Attached script method doesn't work in multiplayer

Hi! I have a script which complete a spell actions. Once a player presses button, THIS player gets this sctipt attached to his gameobject. This script contains a method which is called in the end of the spell when all the damage is dealt.

 void Update()
 {
         if (phase1)
         {
             if (GetComponent<Player>().periodDamageFinished)
             {
                 s26_Event1();
             }
         }
 }
 
     public void s26_Event1()
     {
         caster.networkView.RPC("SendBool", RPCMode.All, "Cast", false);
         Destroy(this.GetComponent<s26>());
         Destroy(GameObject.Find("s26(Clone)"), 0.5f);
         Destroy(phase1, 0.5f);
     }

And the place where the spell activating bool var becomes "true"

     public void GivePeriodDamage(GameObject t, int dmg, int count, float interval, int splashRadius)
     {
         if(networkView.isMine)
         StartCoroutine(PeriodDamage(t, dmg, count, interval, splashRadius));
     }
 
     IEnumerator PeriodDamage(GameObject t, int dmg, int count, float interval, int splashRadius)
     {
         while (periodPhase <= count)
         {
             if (splashRadius == 0)
                 GiveDamage(t, dmg / count);
             else if (splashRadius > 0) GiveSplashDamage(t, dmg / count, splashRadius);
 
                 periodPhase++;
             yield return new WaitForSeconds(interval);
         }
         if (periodPhase > count)
         {
             networkView.RPC("AdjustPeriodDamageFinished", RPCMode.All, true); //periodDamageFinished = true
             periodPhase = 0;
         }
     }

Problem: Method s26_Event1 which script is attached only to caster is being called only at its network and another players still see spell's gameobject! I cant figure out how to call this method only from this caster's network in such way that everybody will see its work.

//Sorry for my English