magarena/release/Magarena/scripts/Soul_Warden.groovy

[
    new MagicWhenOtherComesIntoPlayTrigger() {
        @Override
        public MagicEvent executeTrigger(final MagicGame game,final MagicPermanent permanent,final MagicPermanent otherPermanent) {
            return (otherPermanent != permanent &&
                    otherPermanent.isCreature()) ?
                new MagicEvent(
                    permanent,
                    this,
                    "PN gains 1 life."
                ):
                MagicEvent.NONE;
        }

        @Override
        public void executeEvent(final MagicGame game, final MagicEvent event) {
            game.doAction(new MagicChangeLifeAction(event.getPlayer(),1));
        }
    }
]