How to use

mage.abilities.effects.common.combat.CantBlockActivateAttachedEffect

constructor

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

public Demotion(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId,setInfo,new CardType[]{CardType.ENCHANTMENT},"{W}");
  this.subtype.add(SubType.AURA);
  // Enchant creature
  TargetPermanent auraTarget = new TargetCreaturePermanent();
  this.getSpellAbility().addTarget(auraTarget);
  this.getSpellAbility().addEffect(new AttachEffect(Outcome.Detriment));
  Ability ability = new EnchantAbility(auraTarget.getTargetName());
  this.addAbility(ability);
  // Enchanted creature can't block, and its activated abilities can't be activated.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new CantBlockActivateAttachedEffect()));
     
}

public GelidShackles(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId,setInfo,new CardType[]{CardType.ENCHANTMENT},"{W}");
  addSuperType(SuperType.SNOW);
  this.subtype.add(SubType.AURA);
  // Enchant creature
  TargetPermanent auraTarget = new TargetCreaturePermanent();
  this.getSpellAbility().addTarget(auraTarget);
  this.getSpellAbility().addEffect(new AttachEffect(Outcome.Detriment));
  Ability ability = new EnchantAbility(auraTarget.getTargetName());
  this.addAbility(ability);
  // Enchanted creature can't block, and its activated abilities can't be activated.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new CantBlockActivateAttachedEffect()));
  
  // {snow}: Enchanted creature gains defender until end of turn.
  this.addAbility(new SimpleActivatedAbility(Zone.BATTLEFIELD, new GainAbilityAttachedEffect(DefenderAbility.getInstance(),
    AttachmentType.AURA, Duration.EndOfTurn), new ManaCostsImpl("{S}")));        
}