[
    new MagicWhenAttacksTrigger() {
        @Override
        public MagicEvent executeTrigger(final MagicGame game,final MagicPermanent permanent,final MagicPermanent creature) {
            return (permanent == creature) ?
                new MagicEvent(
                    permanent,
                    MagicTargetChoice.TARGET_CREATURE_YOUR_OPPONENT_CONTROLS,
                    MagicTapTargetPicker.Tap,
                    this,
                    "Tap target creature\$ defending player controls."
                ):
                MagicEvent.NONE;
        }
        @Override
        public void executeEvent(final MagicGame game, final MagicEvent event) {
            event.processTargetPermanent(game,new MagicPermanentAction() {
                public void doAction(final MagicPermanent creature) {
                    game.doAction(new MagicTapAction(creature,true));
                }
            });
        }
    }
]