[
    new MagicSpellCardEvent() {
        @Override
        public MagicEvent getEvent(final MagicCardOnStack cardOnStack,final MagicPayedCost payedCost) {
            return new MagicEvent(
                cardOnStack,
                MagicTargetChoice.NEG_TARGET_PLAYER,
                new MagicDamageTargetPicker(4),
                this,
                "SN deals 4 damage to target player\$. " +
                "If you control three or more artifacts, creatures that player controls can't block this turn."
            );
        }
        @Override
        public void executeEvent(final MagicGame game, final MagicEvent event) {
            event.processTargetPlayer(game,new MagicPlayerAction() {
                public void doAction(final MagicPlayer targetPlayer) {
                    final MagicDamage damage = new MagicDamage(event.getSource(),targetPlayer,4);
                    game.doAction(new MagicDealDamageAction(damage));
                    if (MagicCondition.METALCRAFT_CONDITION.accept(event.getSource())) {
                        final Collection<MagicPermanent> targets =
                                game.filterPermanents(targetPlayer,MagicTargetFilter.TARGET_CREATURE_YOU_CONTROL);
                        for (final MagicPermanent target : targets) {
                            game.doAction(new MagicGainAbilityAction(
                                target,
                                MagicAbility.CannotBlock
                            ));
                        }
                    }
                }
            });
        }
    }
]