override void WorldTick()
{
    if(level.time == 5) // Give the lists some time to build.
    {
        // Global variables.
        let gvars = GC_GlobalVariables.Get();
        // Dynamic array of potential lotto winners.
        Array<Actor> PotentialLottoWinners;
        for(int i = 0; i < gvars.MonsterList.Size(); i++)
        {
            if(gvars.MonsterList[i] is "BaronOfHell" ||
				gvars.MonsterList[i] is "PainElemental" ||
				gvars.MonsterList[i] is "Archvile" ||)
            {
                // Push each one's pointer to the list of pointers of this classtype.
                PotentialLottoWinners.Push(gvars.MonsterList[i]);
            }
        }
        // Then randomly select one to give an item.
        PotentialLottoWinners(random(0, PotentialLottoWinners.Size()-1)).GiveInventory("Promotion",1);
    }
}