[
    new MagicWhenPutIntoGraveyardTrigger() {
        @Override
        public MagicEvent executeTrigger(final MagicGame game,final MagicPermanent permanent,final MagicGraveyardTriggerData triggerData) {
            return (triggerData.fromLocation == MagicLocationType.Play) ?
                new MagicEvent(
                    permanent,
                    new MagicMayChoice(
                        MagicTargetChoice.NEG_TARGET_CREATURE
                    ),
                    new MagicWeakenTargetPicker(1,1),
                    this,
                    "PN may put a -1/-1 counter on target creature."
                ) :
                MagicEvent.NONE;
        }
        
        @Override
        public void executeEvent(final MagicGame game, final MagicEvent event) {
            if (event.isYes()) {
                event.processTargetPermanent(game,new MagicPermanentAction() {
                    public void doAction(final MagicPermanent creature) {
                        game.doAction(new MagicChangeCountersAction(creature,MagicCounterType.MinusOne,1,true));
                    }
                });
            }
        }
    }
]