How to use

addAttachment

method

in

mage.players.Player

@Override
public boolean apply(Game game, Ability source) {
  Player controller = game.getPlayer(source.getControllerId());
  Player targetPlayer = game.getPlayer(source.getFirstTarget());
  if (controller != null && targetPlayer != null) {
    TargetCardInLibrary targetCard = new TargetCardInLibrary(filter);
    if (controller.searchLibrary(targetCard, game)) {
      Card card = game.getCard(targetCard.getFirstTarget());
      if (card != null) {
        game.getState().setValue("attachTo:" + card.getId(), targetPlayer.getId());
        if (controller.moveCards(card, Zone.BATTLEFIELD, source, game)) {
          targetPlayer.addAttachment(card.getId(), game);
        }
      }
    }
    controller.shuffleLibrary(source, game);
    return true;
  }
  return false;
}

@Override
public boolean apply(Game game, Ability source) {
  Permanent sourcePermanent = game.getPermanent(source.getSourceId());
  if (sourcePermanent != null) {
    int zcc = game.getState().getZoneChangeCounter(sourcePermanent.getId());
    if (zcc == source.getSourceObjectZoneChangeCounter()
        || zcc == source.getSourceObjectZoneChangeCounter() + 1
        || zcc == source.getSourceObjectZoneChangeCounter() + 2) {
      Permanent permanent = game.getPermanent(getTargetPointer().getFirst(game, source));
      if (permanent != null) {
        return permanent.addAttachment(source.getSourceId(), game);
      } else {
        Player player = game.getPlayer(getTargetPointer().getFirst(game, source));
        if (player != null) {
          return player.addAttachment(source.getSourceId(), game);
        }
        if (!source.getTargets().isEmpty() && source.getTargets().get(0) instanceof TargetCard) { // e.g. Spellweaver Volute
          Card card = game.getCard(getTargetPointer().getFirst(game, source));
          if (card != null) {
            return card.addAttachment(source.getSourceId(), game);
          }
        }
      }
    }
  }
  return false;
}

game.getState().setValue("attachTo:" + card.getId(), targetPlayer.getId());
if (controller.moveCards(card, Zone.BATTLEFIELD, source, game)) {
  targetPlayer.addAttachment(card.getId(), game);

  targetPermanent.addAttachment(sourcePermanent.getId(), game);
} else if (targetPlayer != null) {
  targetPlayer.addAttachment(sourcePermanent.getId(), game);
} else {
  return false;

  targetPermanent.addAttachment(permanent.getId(), game);
} else if (targetPlayer != null) {
  targetPlayer.addAttachment(permanent.getId(), game);