magarena/release/Magarena/scripts/Deepcavern_Imp.groovy

[
    new MagicAtUpkeepTrigger() {
        @Override
        public MagicEvent executeTrigger(final MagicGame game,final MagicPermanent permanent,final MagicPlayer upkeepPlayer) {
            return (permanent.isController(upkeepPlayer) &&
                    permanent.hasState(MagicPermanentState.MustPayEchoCost)) ?
                new MagicEvent(
                    permanent,
                    new MagicMayChoice(),
                    this,
                    "PN may\$ discard a card. " +
                    "If he or she doesn't, sacrifice SN."
                ):
                MagicEvent.NONE;
        }
        @Override
        public void executeEvent(final MagicGame game, final MagicEvent event) {
            final MagicPermanent permanent = event.getPermanent();
            if (event.isYes() && event.getPlayer().getHandSize() > 0) {
                game.addEvent(new MagicDiscardEvent(
                    permanent,
                    event.getPlayer()
                ));
                game.doAction(MagicChangeStateAction.Clear(
                    permanent,
                    MagicPermanentState.MustPayEchoCost
                ));
            } else {
                game.doAction(new MagicSacrificeAction(permanent));
            }
        }
    }
]