[
    new MagicSpellCardEvent() {
        @Override
        public MagicEvent getEvent(final MagicCardOnStack cardOnStack,final MagicPayedCost payedCost) {
            final int amount=payedCost.getX();
            return new MagicEvent(
                cardOnStack,
                this,
                "SN deals "+amount+" damage to each creature."
            );
        }
        @Override
        public void executeEvent(
                final MagicGame game,
                final MagicEvent event) {
            final int amount=event.getCardOnStack().getX();
            final Collection<MagicPermanent> targets=
                game.filterPermanents(event.getPlayer(),MagicTargetFilter.TARGET_CREATURE);
            for (final MagicPermanent target : targets) {
                final MagicDamage damage=new MagicDamage(event.getSource(),target,amount);
                game.doAction(new MagicDealDamageAction(damage));
            }
        }
    }
]