How to use

BlocksIfAbleAllEffect

in

mage.abilities.effects.common.combat

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

public InvasionPlans(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{2}{R}");
  // All creatures block each turn if able. 
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new BlocksIfAbleAllEffect(FILTER_PERMANENT_CREATURES)));
  // The attacking player chooses how each creature blocks each turn.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new InvasionPlansEffect()));
}

public GrandMelee(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{3}{R}");
  // All creatures attack each turn if able.
  Ability ability = new SimpleStaticAbility(Zone.BATTLEFIELD, new AttacksIfAbleAllEffect(FILTER_PERMANENT_CREATURES));
  this.addAbility(ability, new AttackedThisTurnWatcher());
  // All creatures block each turn if able.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new BlocksIfAbleAllEffect(FILTER_PERMANENT_CREATURES)));
}

public BrutalHordechief(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId,setInfo,new CardType[]{CardType.CREATURE},"{3}{B}");
  this.subtype.add(SubType.ORC, SubType.WARRIOR);
  this.power = new MageInt(3);
  this.toughness = new MageInt(3);
  // Whenever a creature you control attacks, defending player loses 1 life and you gain 1 life.
  this.addAbility(new BrutalHordechiefTriggeredAbility());
  // {3}{R/W}{R/W}: Creatures your opponents control block this turn if able, and you choose how those creatures block.
  Ability ability = new SimpleActivatedAbility(Zone.BATTLEFIELD, new BlocksIfAbleAllEffect(filter, Duration.EndOfTurn), new ManaCostsImpl("{3}{R/W}{R/W}"));
  ability.addEffect(new BrutalHordechiefChooseBlockersEffect());
  ability.addWatcher(new ChooseBlockersRedundancyWatcher());
  ability.addEffect(new ChooseBlockersRedundancyWatcherIncrementEffect());
  this.addAbility(ability);
}

public PredatoryRampage(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId,setInfo,new CardType[]{CardType.SORCERY},"{3}{G}{G}");
  // Creatures you control get +3/+3 until end of turn.
  this.getSpellAbility().addEffect(new BoostControlledEffect(3, 3, Duration.EndOfTurn));
  // Each creature your opponents control blocks this turn if able.
  this.getSpellAbility().addEffect(new BlocksIfAbleAllEffect(filter, Duration.EndOfTurn));
  this.getSpellAbility().addEffect(new GainAbilityAllEffect(BlocksThisTurnMarkerAbility.getInstance(), Duration.EndOfTurn, filter, ""));
}