magarena/release/Magarena/scripts/Underworld_Connections.groovy

def Draw = new MagicPermanentActivation(
        new MagicActivationHints(MagicTiming.Draw),
        "Draw"
    ) {

        @Override
        public Iterable<MagicEvent> getCostEvent(final MagicPermanent source) {
            return [
                new MagicTapEvent(source),
                new MagicPayLifeEvent(source,1),
            ];
        }

        @Override
        public MagicEvent getPermanentEvent(final MagicPermanent source,final MagicPayedCost payedCost) {
            return new MagicEvent(
                source,
                this,
                "PN draws a card"
            );
        }

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

[
    new MagicStatic(MagicLayer.Ability) {
        @Override
        public void modAbilityFlags(final MagicPermanent source, final MagicPermanent permanent, final Set<MagicAbility> flags) {
            permanent.addAbility(Draw);
        }
        @Override
        public boolean accept(final MagicGame game,final MagicPermanent source,final MagicPermanent target) {
            return MagicStatic.acceptLinked(game, source, target);
        }
    }
]