[
    new MagicLandfallTrigger() {
        @Override
        protected MagicEvent getEvent(final MagicPermanent permanent) {
            return new MagicEvent(
                permanent,
                new MagicSimpleMayChoice(
                    MagicSimpleMayChoice.PLAY_TOKEN,
                    1,
                    MagicSimpleMayChoice.DEFAULT_YES
                ),
                this,
                "PN may\$ put a 1/1 white Bird creature " +
                "token with flying onto the battlefield."
            );
        }
        @Override
        public void executeEvent(
                final MagicGame game,
                final MagicEvent event) {
            if (event.isYes()) {
                game.doAction(new MagicPlayTokenAction(
                    event.getPlayer(),
                    TokenCardDefinitions.get("Bird1")
                ));
            }
        }        
    }
]