void main()
{

object oPC = GetEnteringObject();

if (!GetIsPC(oPC)) return;

if (GetItemPossessedBy(oPC, "leadercrystal")== OBJECT_INVALID)
   return;

object oItem;
oItem = GetItemPossessedBy(oPC, "leadercrystal");

if (GetIsObjectValid(oItem)) DestroyObject(oItem);

}