magarena/release/Magarena/scripts/Myr_Sire.groovy

[
    new MagicWhenDiesTrigger() {
        @Override
        public MagicEvent getEvent(final MagicPermanent permanent) {
            return new MagicEvent(
                permanent,
                this,
                "PN puts a 1/1 colorless Myr artifact creature token onto the battlefield."
            );
        }

        @Override
        public void executeEvent(
                final MagicGame game,
                final MagicEvent event) {
            game.doAction(new MagicPlayTokenAction(event.getPlayer(), TokenCardDefinitions.get("Myr1")));
        }
    }
]