How to use

CantBeTargetedAttachedEffect

in

mage.abilities.effects.common

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

public CanopyCover(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{1}{G}");
  this.subtype.add(SubType.AURA);
  // Enchant creature
  TargetPermanent auraTarget = new TargetCreaturePermanent();
  this.getSpellAbility().addTarget(auraTarget);
  this.getSpellAbility().addEffect(new AttachEffect(Outcome.AddAbility));
  Ability ability = new EnchantAbility(auraTarget.getTargetName());
  this.addAbility(ability);
  // Enchanted creature can't be blocked except by creatures with flying or reach. (!this is a static ability of the enchantment)
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new CanopyCoverEffect()));
  // Enchanted creature can't be the target of spells or abilities your opponents control.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new CantBeTargetedAttachedEffect(filter, Duration.WhileOnBattlefield, AttachmentType.AURA, TargetController.OPPONENT)));
}

public ShieldingPlax(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId,setInfo,new CardType[]{CardType.ENCHANTMENT},"{2}{G/U}");
  this.subtype.add(SubType.AURA);
  // Enchant creature
  TargetPermanent auraTarget = new TargetCreaturePermanent();
  this.getSpellAbility().addTarget(auraTarget);
  this.getSpellAbility().addEffect(new AttachEffect(Outcome.AddAbility));
  Ability ability = new EnchantAbility(auraTarget.getTargetName());
  this.addAbility(ability);
  // When Shielding Plax enters the battlefield, draw a card.
  this.addAbility(new EntersBattlefieldTriggeredAbility(new DrawCardSourceControllerEffect(1)));
  // Enchanted creature can't be the target of spells or abilities your opponents control.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD,
      new CantBeTargetedAttachedEffect(filter, Duration.WhileOnBattlefield, AttachmentType.AURA, TargetController.OPPONENT)));
}

public AntiMagicAura(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{2}{U}");
  this.subtype.add(SubType.AURA);
  // Enchant creature
  TargetPermanent auraTarget = new TargetCreaturePermanent();
  this.getSpellAbility().addTarget(auraTarget);
  this.getSpellAbility().addEffect(new AttachEffect(Outcome.AddAbility));
  Ability ability = new EnchantAbility(auraTarget.getTargetName());
  this.addAbility(ability);
  // Enchanted creature can't be the target of spells and can't be enchanted by other Auras.
  CantBeTargetedAttachedEffect cantTargetEffect = new CantBeTargetedAttachedEffect(new FilterSpell("spells"), Duration.WhileOnBattlefield, AttachmentType.AURA, TargetController.ANY);
  Ability ability2 = new SimpleStaticAbility(Zone.BATTLEFIELD, cantTargetEffect);
  ability2.addEffect(new AntiMagicAuraRuleEffect());
  this.addAbility(ability2);
}