How to use

UntapAllDuringEachOtherPlayersUntapStepEffect

in

mage.abilities.effects.common.continuous

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

public UntapAllDuringEachOtherPlayersUntapStepEffect(FilterPermanent filter) {
  super(Duration.WhileOnBattlefield, Outcome.Untap);
  this.filter = filter;
  staticText = setStaticText();
}

public IvorytuskFortress(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId,setInfo,new CardType[]{CardType.CREATURE},"{2}{W}{B}{G}");
  this.subtype.add(SubType.ELEPHANT);
  this.power = new MageInt(5);
  this.toughness = new MageInt(7);
  // Untap each creature you control with a +1/+1 counter on it during each other player's untap step.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new UntapAllDuringEachOtherPlayersUntapStepEffect(filter)));
}

public SeedbornMuse(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId,setInfo,new CardType[]{CardType.CREATURE},"{3}{G}{G}");
  this.subtype.add(SubType.SPIRIT);
  this.power = new MageInt(2);
  this.toughness = new MageInt(4);
  // Untap all permanents you control during each other player's untap step.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new UntapAllDuringEachOtherPlayersUntapStepEffect(new FilterControlledPermanent("permanents you control"))));
}

public QuestForRenewal(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{1}{G}");
  // Whenever a creature you control becomes tapped, you may put a quest counter on Quest for Renewal.
  this.addAbility(new BecomesTappedTriggeredAbility(new AddCountersSourceEffect(CounterType.QUEST.createInstance()),
      true, new FilterControlledCreaturePermanent("a creature you control")));
  // As long as there are four or more quest counters on Quest for Renewal, untap all creatures you control during each other player's untap step.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new ConditionalContinuousEffect(
      new UntapAllDuringEachOtherPlayersUntapStepEffect(new FilterControlledCreaturePermanent()),
      new SourceHasCounterCondition(CounterType.QUEST, 4, Integer.MAX_VALUE),
      "As long as there are four or more quest counters on {this}, untap all creatures you control during each other player's untap step.")));
}

public ProphetOfKruphix(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{3}{G}{U}");
  this.subtype.add(SubType.HUMAN);
  this.subtype.add(SubType.WIZARD);
  this.power = new MageInt(2);
  this.toughness = new MageInt(3);
  // Untap all creatures and lands you control during each other player's untap step.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new UntapAllDuringEachOtherPlayersUntapStepEffect(filter)));
  // You may cast creature spells as though they had flash.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new CastAsThoughItHadFlashAllEffect(Duration.WhileOnBattlefield, new FilterCreatureCard("creature spells"))));
}

public MurkfiendLiege(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId,setInfo,new CardType[]{CardType.CREATURE},"{2}{G/U}{G/U}{G/U}");
  this.subtype.add(SubType.HORROR);
  this.power = new MageInt(4);
  this.toughness = new MageInt(4);
  // Other green creatures you control get +1/+1.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new BoostControlledEffect(1,1, Duration.WhileOnBattlefield, filterGreen, true)));
  // Other blue creatures you control get +1/+1.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new BoostControlledEffect(1,1, Duration.WhileOnBattlefield, filterBlue, true)));
  // Untap all green and/or blue creatures you control during each other player's untap step.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new UntapAllDuringEachOtherPlayersUntapStepEffect(filter)));
}