magarena/release/Magarena/scripts/Guiltfeeder.groovy

[
    new MagicWhenAttacksUnblockedTrigger() {
        @Override
        public MagicEvent executeTrigger(final MagicGame game,final MagicPermanent permanent,final MagicPermanent creature) {
            return (creature == permanent) ?
                new MagicEvent(
                    permanent,
                    permanent.getOpponent(),
                    this,
                    "PN loses 1 life for each card in his or her graveyard."
                ):
                MagicEvent.NONE;
        }

        @Override
        public void executeEvent(final MagicGame game, final MagicEvent event) {
            final MagicPlayer player = event.getPlayer();
            game.doAction(new MagicChangeLifeAction(
                player,
                -player.getGraveyard().size()
            ));
        }
    }
]