sashclause: {
        effectType: 'Rule',
        onStart: function() {
            this.add('rule', 'Sash Clause: Limit one '+"+this.getItem(focussash).name);
        },
        validateTeam: function(team, format) {
            var hasFocusSash = 0;
            for (var i=0; i<team.length; i++) { // Check each pokemon
                var item = toId(team[i].item); // Get it's item
                if (item === 'focussash') hasFocusSash++; // If it's an item add 1 to the counter
                if (hasFocusSash > 1) { // If the counter is more than 1 return the error
                    return ["You are limited to only one "+this.getItem(focussash).name+" by Sash Clause.","(You have more than one Pokemon with "+this.getItem(focussash).name+")"];
                }
            }
        }
    }