magarena/release/Magarena/scripts/Ajani_s_Mantra.groovy

[
    new MagicAtUpkeepTrigger() {
        @Override
        public MagicEvent executeTrigger(final MagicGame game,final MagicPermanent permanent,final MagicPlayer upkeepPlayer) {
            return permanent.isController(upkeepPlayer) ?
                new MagicEvent(
                    permanent,
                    new MagicSimpleMayChoice(
                        MagicSimpleMayChoice.GAIN_LIFE,
                        1,
                        MagicSimpleMayChoice.DEFAULT_YES
                    ),
                    this,
                    "PN may\$ gain 1 life."
                ) :
                MagicEvent.NONE;
        }
        @Override
        public void executeEvent(
                final MagicGame game,
                final MagicEvent event) {
            if (event.isYes()) {
                game.doAction(new MagicChangeLifeAction(event.getPlayer(),1));
            }
        } 
    }
]