[
    new MagicAtUpkeepTrigger() {
        @Override
        public MagicEvent executeTrigger(final MagicGame game,final MagicPermanent permanent,final MagicPlayer upkeepPlayer) {
            final MagicPermanent enchanted = permanent.getEnchantedCreature();
            return enchanted.isController(upkeepPlayer) ?
                new MagicEvent(
                    enchanted,
                    this,
                    "PN loses 1 life."
                ):
                MagicEvent.NONE;
        }
        @Override
        public void executeEvent(
                final MagicGame game,
                final MagicEvent event) {
            game.doAction(new MagicChangeLifeAction(event.getPlayer(),-1));
        }
    }
]