/// <summary>
        /// Ends a creature's concentration effect immediately.
        /// No message is sent by this method, so be sure to send one if you need to inform a player.
        /// </summary>
        /// <param name="creature">The creatures whose concentration we're ending.</param>
        public static void EndConcentrationEffect(NWCreature creature)
        {
            if (creature.IsPlayer)
            {
                Player player = DataService.Player.GetByID(creature.GlobalID);
                if (player.ActiveConcentrationPerkID == null)
                {
                    return;
                }

                player.ActiveConcentrationPerkID = null;
                player.ActiveConcentrationTier   = 0;
                DataService.SubmitDataChange(player, DatabaseActionType.Update);
            }
            else
            {
                creature.DeleteLocalInt("ACTIVE_CONCENTRATION_PERK_ID");
            }

            creature.DeleteLocalInt("ACTIVE_CONCENTRATION_ABILITY_TICK");
            creature.DeleteLocalObject("CONCENTRATION_TARGET");
            creature.RemoveEffect(EffectTypeScript.SkillIncrease); // Remove the effect icon.

            ConcentratingCreatures.Remove(creature);
        }