magarena/release/Magarena/scripts/Snake_Umbra.groovy

[
    new MagicWhenDamageIsDealtTrigger() {
        @Override
        public MagicEvent executeTrigger(final MagicGame game,final MagicPermanent permanent,final MagicDamage damage) {
            final MagicPermanent enchanted = permanent.getEnchantedCreature();
            return (enchanted == damage.getSource() && 
                    enchanted.isOpponent(damage.getTarget())) ?
                new MagicEvent(
                    enchanted,
                    new MagicSimpleMayChoice(
                        MagicSimpleMayChoice.DRAW_CARDS,
                        1,
                        MagicSimpleMayChoice.DEFAULT_NONE
                    ),
                    this,
                    "PN may\$ draw a card."
                ) :
                MagicEvent.NONE;
        }
        @Override
        public void executeEvent(final MagicGame game, final MagicEvent event) {
            if (event.isYes()) {
                game.doAction(new MagicDrawAction(event.getPlayer()));
            }
        }
    }
]