public void resolve() {
                    CardList choices = AllZoneUtil.getPlayerLandsInPlay(player);
                    player.sacrificePermanent(vortex.getName() + " - select a land to sacrifice.", choices);

                    //if no lands in play, sacrifice all "Mana Vortex"s
                    if (AllZoneUtil.getLandsInPlay().size() == 0) {
                        for (Card d : vortices) {
                            AllZone.getGameAction().sacrifice(d);
                        }
                        return;
                    }
                }