Disabling random GUI Button from array

I need help figuring out how to do it. Its supposed to get a random button, destroy it for the game and remove it from the array, thanks in advance

     var n;
      var kills;
      var kill;
      var VAT : GameManager = GetComponent(GameManager);           //variable from another script that signals the AI's turn
      var Cards : Array;
      
      function VampireTurn () {
         //This tells the AI if it can destroy a card or not
          n = Random.Range (0, 2);
          if(n==1){
              kills === true;
          }
 //Part which i can't seem to figure out
          if(kills === true){
              Cards = GameObject.FindGameObjectsWithTag("Cards");
              var i = Random.Range(0, Cards.lenght);
              kill = Cards[i];
          }
      }

How would you do it? Please javascript since it has to reference other javascripts and C# would just destroy the balance of the universe and make the delivery date unachivable. THANKS FOR ANY HELP

Fairly urgent