magarena/release/Magarena/scripts/Verdant_Embrace.groovy

[
    new MagicAtUpkeepTrigger() {
        @Override
        public MagicEvent executeTrigger(final MagicGame game,final MagicPermanent permanent,final MagicPlayer upkeepPlayer) {
            return permanent.getEnchantedCreature().isValid() ?
                new MagicEvent(
                    permanent.getEnchantedCreature(),
                    this,
                    "PN puts a 1/1 green Saproling creature token onto the battlefield."
                ):
                MagicEvent.NONE;
        }

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