[
    new MagicWhenDamageIsDealtTrigger() {
        @Override
        public MagicEvent executeTrigger(
                final MagicGame game,
                final MagicPermanent permanent,
                final MagicDamage damage) {
            final int amount = damage.getDealtAmount();
            return damage.getTarget() == permanent ?
                new MagicEvent(
                    permanent,
                    damage.getSource().getController(),
                    amount,
                    this,
                    "PN sacrifices RN permanents."
                ):
                MagicEvent.NONE;
        }
        
        @Override
        public void executeEvent(final MagicGame game, final MagicEvent event) {
            final MagicPermanent permanent = event.getPermanent();
            final MagicPlayer player = event.getPlayer();
            int amount = event.getRefInt();
            while (amount > 0 && player.getPermanents().size() > 0) {
                game.addEvent(new MagicSacrificePermanentEvent(
                    permanent,
                    player,
                    MagicTargetChoice.SACRIFICE_PERMANENT
                ));
                amount--;
            }
        }
    }
]