Program: 157657
Project: 157657
Buggy source:
@Override public boolean apply(Game game,Ability source){
  Player controller=game.getPlayer(source.getControllerId());
  MageObject sourceObject=source.getSourceObject(game);
  if (controller != null && sourceObject != null) {
    Map<UUID,Cards> cardsToDiscard=new HashMap<>();
    Map<UUID,Cards> cardsToReveal=new HashMap<>();
    for (    UUID playerId : game.getState().getPlayersInRange(controller.getId(),game)) {
      Player player=game.getPlayer(playerId);
      if (player != null) {
        Cards cards=new CardsImpl();
        Target target=new TargetDiscard(0,1,new FilterCard(),playerId);
        player.chooseTarget(outcome,target,source,game);
        cards.addAll(target.getTargets());
        cardsToDiscard.put(playerId,cards);
      }
    }
    for (    UUID playerId : game.getState().getPlayersInRange(controller.getId(),game)) {
      Player player=game.getPlayer(playerId);
      if (player != null) {
        Cards cardsPlayer=cardsToDiscard.get(playerId);
        if (cardsPlayer != null) {
          for (          UUID cardId : cardsPlayer) {
            Card card=game.getCard(cardId);
            if (card != null) {
              player.discard(card,source,game);
            }
          }
        }
      }
    }
    for (    UUID playerId : game.getState().getPlayersInRange(controller.getId(),game)) {
      Player player=game.getPlayer(playerId);
      if (player != null) {
        Cards cardsPlayer=cardsToDiscard.get(playerId);
        if (cardsPlayer != null && !cardsPlayer.isEmpty()) {
          TargetCardInLibrary target=new TargetCardInLibrary(0,1,StaticFilters.FILTER_BASIC_LAND_CARD);
          if (player.searchLibrary(target,game)) {
            if (!target.getTargets().isEmpty()) {
              Cards cards=new CardsImpl(target.getTargets());
              cards.addAll(target.getTargets());
              cardsToReveal.put(playerId,cards);
            }
          }
        }
      }
    }
    for (    UUID playerId : game.getState().getPlayersInRange(controller.getId(),game)) {
      Player player=game.getPlayer(playerId);
      if (player != null) {
        Cards cardsPlayer=cardsToReveal.get(playerId);
        if (cardsPlayer != null) {
          for (          UUID cardId : cardsPlayer) {
            Cards cards=new CardsImpl(game.getCard(cardId));
            Card card=game.getCard(cardId);
            player.revealCards(sourceObject.getIdName() + "String_Node_Str" + player.getName()+ ')',cards,game);
            player.moveCards(card,Zone.HAND,source,game);
            player.shuffleLibrary(source,game);
          }
        }
      }
    }
    return true;
  }
  return false;
}

Fixed version (ground truth):
@Override public boolean apply(Game game,Ability source){
  Player controller=game.getPlayer(source.getControllerId());
  MageObject sourceObject=source.getSourceObject(game);
  if (controller != null && sourceObject != null) {
    Map<UUID,Cards> cardsToDiscard=new HashMap<>();
    Map<UUID,Cards> cardsToReveal=new HashMap<>();
    for (    UUID playerId : game.getState().getPlayersInRange(controller.getId(),game)) {
      Player player=game.getPlayer(playerId);
      if (player != null) {
        Cards cards=new CardsImpl();
        Target target=new TargetDiscard(0,1,new FilterCard(),playerId);
        player.chooseTarget(outcome,target,source,game);
        cards.addAll(target.getTargets());
        cardsToDiscard.put(playerId,cards);
      }
    }
    for (    UUID playerId : game.getState().getPlayersInRange(controller.getId(),game)) {
      Player player=game.getPlayer(playerId);
      if (player != null) {
        Cards cardsPlayer=cardsToDiscard.get(playerId);
        if (cardsPlayer != null) {
          for (          UUID cardId : cardsPlayer) {
            Card card=game.getCard(cardId);
            if (card != null) {
              player.discard(card,source,game);
            }
          }
        }
      }
    }
    for (    UUID playerId : game.getState().getPlayersInRange(controller.getId(),game)) {
      Player player=game.getPlayer(playerId);
      if (player != null) {
        Cards cardsPlayer=cardsToDiscard.get(playerId);
        if (cardsPlayer != null && !cardsPlayer.isEmpty()) {
          TargetCardInLibrary target=new TargetCardInLibrary(0,1,StaticFilters.FILTER_CARD_BASIC_LAND);
          if (player.searchLibrary(target,game)) {
            if (!target.getTargets().isEmpty()) {
              Cards cards=new CardsImpl(target.getTargets());
              cards.addAll(target.getTargets());
              cardsToReveal.put(playerId,cards);
            }
          }
        }
      }
    }
    for (    UUID playerId : game.getState().getPlayersInRange(controller.getId(),game)) {
      Player player=game.getPlayer(playerId);
      if (player != null) {
        Cards cardsPlayer=cardsToReveal.get(playerId);
        if (cardsPlayer != null) {
          for (          UUID cardId : cardsPlayer) {
            Cards cards=new CardsImpl(game.getCard(cardId));
            Card card=game.getCard(cardId);
            player.revealCards(sourceObject.getIdName() + "String_Node_Str" + player.getName()+ ')',cards,game);
            player.moveCards(card,Zone.HAND,source,game);
            player.shuffleLibrary(source,game);
          }
        }
      }
    }
    return true;
  }
  return false;
}