Program: 158183
Project: 158183
Buggy source:
@Override public boolean apply(Game game,Ability source){
  Card card=game.getCard(((FixedTarget)getTargetPointer()).getTarget());
  Permanent permanent=game.getPermanent(source.getSourceId());
  if (card == null || permanent == null) {
    discard();
    return false;
  }
  if (IdOfCopiedCard == null || !IdOfCopiedCard.equals(card.getId())) {
    IdOfCopiedCard=card.getId();
    cardToCopy=card.copy();
    cardToCopy.assignNewId();
  }
  permanent.getPower().setValue(cardToCopy.getPower().getValue());
  permanent.getToughness().setValue(cardToCopy.getToughness().getValue());
  permanent.getColor(game).setColor(cardToCopy.getColor(game));
  permanent.getManaCost().clear();
  permanent.getManaCost().add(cardToCopy.getManaCost());
  permanent.getCardType().clear();
  for (  CardType type : cardToCopy.getCardType()) {
    if (!permanent.getCardType().contains(type)) {
      permanent.getCardType().add(type);
    }
  }
  permanent.getSubtype(game).clear();
  for (  String type : cardToCopy.getSubtype(game)) {
    if (!permanent.getSubtype(game).contains(type)) {
      permanent.getSubtype(game).add(type);
    }
  }
  permanent.getSupertype().clear();
  permanent.getSupertype().add("String_Node_Str");
  for (  String type : cardToCopy.getSupertype()) {
    if (!permanent.getSupertype().contains(type)) {
      permanent.getSupertype().add(type);
    }
  }
  permanent.removeAllAbilities(source.getSourceId(),game);
  permanent.addAbility(HexproofAbility.getInstance(),source.getSourceId(),game);
  permanent.addAbility(new PutCardIntoGraveFromAnywhereAllTriggeredAbility(new LazavDimirEffect(),true,new FilterCreatureCard("String_Node_Str"),TargetController.OPPONENT,SetTargetPointer.CARD),source.getSourceId(),game);
  for (  Ability ability : cardToCopy.getAbilities()) {
    if (!permanent.getAbilities().contains(ability)) {
      permanent.addAbility(ability,source.getSourceId(),game);
    }
  }
  return true;
}

Fixed version (ground truth):
@Override public boolean apply(Game game,Ability source){
  Permanent permanent=game.getPermanent(source.getSourceId());
  if (permanent == null) {
    discard();
    return true;
  }
  permanent.getPower().setValue(cardToCopy.getPower().getValue());
  permanent.getToughness().setValue(cardToCopy.getToughness().getValue());
  permanent.getColor(game).setColor(cardToCopy.getColor(game));
  permanent.getManaCost().clear();
  permanent.getManaCost().add(cardToCopy.getManaCost());
  permanent.getCardType().clear();
  for (  CardType type : cardToCopy.getCardType()) {
    if (!permanent.getCardType().contains(type)) {
      permanent.getCardType().add(type);
    }
  }
  permanent.getSubtype(game).clear();
  for (  String type : cardToCopy.getSubtype(game)) {
    if (!permanent.getSubtype(game).contains(type)) {
      permanent.getSubtype(game).add(type);
    }
  }
  permanent.getSupertype().clear();
  permanent.getSupertype().add("String_Node_Str");
  for (  String type : cardToCopy.getSupertype()) {
    if (!permanent.getSupertype().contains(type)) {
      permanent.getSupertype().add(type);
    }
  }
  permanent.removeAllAbilities(source.getSourceId(),game);
  permanent.addAbility(HexproofAbility.getInstance(),source.getSourceId(),game);
  permanent.addAbility(new PutCardIntoGraveFromAnywhereAllTriggeredAbility(new LazavDimirEffect(),true,new FilterCreatureCard("String_Node_Str"),TargetController.OPPONENT,SetTargetPointer.CARD),source.getSourceId(),game);
  for (  Ability ability : cardToCopy.getAbilities()) {
    if (!permanent.getAbilities().contains(ability)) {
      permanent.addAbility(ability,source.getSourceId(),game);
    }
  }
  return true;
}