How to use

apply

method

in

mage.abilities.effects.common.EntersBattlefieldWithXCountersEffect

@Override
public boolean apply(Game game, Ability source) {
  Permanent permanent = game.getPermanentEntering(source.getSourceId());
  if (permanent != null) {
    // except only takes place if something was copied
    if (permanent.isCopy()) {
      return super.apply(game, source);
    }
  }
  return false;
}

@Override
public boolean apply(Game game, Ability source) {
  Player controller = game.getPlayer(source.getControllerId());
  Permanent permanent = game.getPermanentEntering(source.getSourceId());
  if (controller != null && permanent != null) {
    int amount = controller.rollDice(game, 6);
    ArrayList<UUID> appliedEffects = (ArrayList<UUID>) this.getValue("appliedEffects"); // the basic event is the EntersBattlefieldEvent, so use already applied replacement effects from that event
    permanent.addCounters(CounterType.P1P1.createInstance(amount), source, game, appliedEffects);
    return super.apply(game, source);
  }
  return false;
}

@Override
public boolean apply(Game game, Ability source) {
  Player controller = game.getPlayer(source.getControllerId());
  Permanent permanent = game.getPermanentEntering(source.getSourceId());
  if (controller != null && permanent != null) {
    int amount = controller.rollDice(game, 6);
    ArrayList<UUID> appliedEffects = (ArrayList<UUID>) this.getValue("appliedEffects"); // the basic event is the EntersBattlefieldEvent, so use already applied replacement effects from that event
    permanent.addCounters(CounterType.P1P1.createInstance(amount), source, game, appliedEffects);
    return super.apply(game, source);
  }
  return false;
}