magarena/release/Magarena/scripts/Necropede.groovy

[
    new MagicWhenDiesTrigger() {
        @Override
        public MagicEvent getEvent(final MagicPermanent permanent) {
            return new MagicEvent(
                permanent,
                new MagicMayChoice(
                    MagicTargetChoice.NEG_TARGET_CREATURE
                ),
                new MagicWeakenTargetPicker(1,1),
                this,
                "PN may\$ put a -1/-1 counter on target creature\$."
            );
        }

        @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));
                    }
                });
            }
        }
    }
]