How to use

CantBeTargetedCardsGraveyardsEffect

in

mage.abilities.effects.common

@Override
public CantBeTargetedCardsGraveyardsEffect copy() {
  return new CantBeTargetedCardsGraveyardsEffect(this);
}

public GroundSeal(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{1}{G}");
  // When Ground Seal enters the battlefield, draw a card.
  this.addAbility(new EntersBattlefieldTriggeredAbility(new DrawCardSourceControllerEffect(1)));
  // Cards in graveyards can't be the targets of spells or abilities.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new CantBeTargetedCardsGraveyardsEffect()));
}

public SilentGravestone(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT}, "{1}");
  // Cards in graveyards can't be the targets of spells or abilities.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new CantBeTargetedCardsGraveyardsEffect()));
  // {4}, {t}: Exile Silent Gravestone and all cards from all graveyards. Draw a card.
  Ability ability = new SimpleActivatedAbility(new ExileSourceEffect(), new GenericManaCost(4));
  ability.addCost(new TapSourceCost());
  ability.addEffect(new ExileGraveyardAllPlayersEffect().setText("and all cards from all graveyards"));
  ability.addEffect(new DrawCardSourceControllerEffect(1));
  this.addAbility(ability);
}

public UnderworldCerberus(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{3}{B}{R}");
  this.subtype.add(SubType.HOUND);
  this.power = new MageInt(6);
  this.toughness = new MageInt(6);
  // Underworld Cerberus can't be blocked except by three or more creatures.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new CantBeBlockedByOneEffect(3)));
  // Cards in graveyards can't be the targets of spells or abilities.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new CantBeTargetedCardsGraveyardsEffect()));
  // When Underworld Cerberus dies, exile it and each player returns all creature cards from their graveyard to their hand.
  Ability ability = new DiesTriggeredAbility(new ExileSourceEffect());
  ability.addEffect(new ReturnToHandFromGraveyardAllEffect(new FilterCreatureCard("creature cards")));
  this.addAbility(ability);
}