public void showMessage() {
                if (choices.size() == 0) stop();
                if (spell.getTargetCard() != null) stop();
                AllZone.getDisplay().showMessage("Select target Spell: ");
                Card choice = GuiUtils.getChoiceOptional("Choose a Spell", choices.toArray());
                if (choice != null) {
                    spell.setTargetCard(choice);
                    done();
                } else stop();

            }