How to use mage.util

@Override
public TargetAddress next() {
  TargetAddress ret = new TargetAddress(lastSpellAbilityIndex,
      lastMode,
      lastTargetIndex);
  calcNext();
  return ret;
}

private static SubTypeList createArrayList(SubType subtype) {
  SubTypeList subtypes = new SubTypeList();
  subtypes.add(subtype);
  return subtypes;
}

@Override
public boolean apply(Game game, Ability source, Ability abilityToModify) {
  CardUtil.increaseCost(abilityToModify, 2);
  return true;
}

@Override
public boolean apply(Game game, Ability source, Ability abilityToModify) {
  SpellAbility spellAbility = (SpellAbility) abilityToModify;
  CardUtil.adjustCost(spellAbility, 2);
  return true;
}

@Override
public boolean apply(Game game, Ability source, Ability abilityToModify) {
  CardUtil.reduceCost(abilityToModify, 1);
  return true;
}

FabricateEffect(int value) {
  super(Outcome.Benefit);
  this.value = value;
  this.staticText = "Fabricate " + value
      + " <i>(When this creature enters the battlefield, put " + CardUtil.numberToText(value, "a") + " +1/+1 counter" + (value > 1 ? "s" : "")
      + " on it or create " + CardUtil.numberToText(value, "a") + " 1/1 colorless Servo artifact creature token" + (value > 1 ? "s" : "") + ".)</i>";
}

public BecomesCreatureTypeTargetEffect(final BecomesCreatureTypeTargetEffect effect) {
  super(effect);
  this.subtypes.addAll(effect.subtypes);
  this.loseOther = effect.loseOther;
  this.loseOther = effect.loseOther;
}

public MageVersion(int major, int minor, int patch, String minorPatch, String editionInfo, Class sourceClass) {
  this.major = major;
  this.minor = minor;
  this.patch = patch;
  this.minorPatch = minorPatch;
  this.editionInfo = editionInfo;
  // build time
  this.buildTime = showBuildTime ? JarVersion.getBuildTime(sourceClass) : "";
}

@Override
public boolean apply(Game game, Ability source, Ability abilityToModify) {
  CardUtil.increaseCost(abilityToModify, 3);
  return true;
}

@Override
public boolean apply(Game game, Ability source, Ability abilityToModify) {
  SpellAbility spellAbility = (SpellAbility) abilityToModify;
  CardUtil.adjustCost(spellAbility, -2);
  return true;
}

@Override
public boolean apply(Game game, Ability source, Ability abilityToModify) {
  CardUtil.reduceCost(abilityToModify, 2);
  return true;
}

public AdaptEffect(int adaptNumber) {
  super(Outcome.BoostCreature);
  this.adaptNumber = adaptNumber;
  staticText = "Adapt " + adaptNumber +
      " <i>(If this creature has no +1/+1 counters on it, put " +
      CardUtil.numberToText(adaptNumber) + " +1/+1 counter" +
      (adaptNumber > 1 ? "s" : "") + " on it.)</i>";
}

@Override
public boolean apply(Game game, Ability source, Ability abilityToModify) {
  CardUtil.increaseCost(abilityToModify, 1);
  return true;
}

@Override
public boolean apply(Game game, Ability source, Ability abilityToModify) {
  SpellAbility spellAbility = (SpellAbility) abilityToModify;
  CardUtil.adjustCost(spellAbility, -2);
  return true;
}

@Override
public boolean apply(Game game, Ability source, Ability abilityToModify) {
  CardUtil.reduceCost(abilityToModify, this.amount);
  return true;
}

@Override
public boolean apply(Game game, Ability source, Ability abilityToModify) {
  CardUtil.increaseCost(abilityToModify, 2);
  return true;
}

@Override
public boolean apply(Game game, Ability source, Ability abilityToModify) {
  SpellAbility spellAbility = (SpellAbility) abilityToModify;
  CardUtil.adjustCost(spellAbility, -2);
  return true;
}

@Override
public boolean apply(Game game, Ability source, Ability abilityToModify) {
  CardUtil.increaseCost(abilityToModify, 1);
  return true;
}

@Override
public boolean apply(Game game, Ability source, Ability abilityToModify) {
  SpellAbility spellAbility = (SpellAbility) abilityToModify;
  CardUtil.adjustCost(spellAbility, 1);
  return true;
}

@Override
public boolean apply(Game game, Ability source, Ability abilityToModify) {
  SpellAbility spellAbility = (SpellAbility) abilityToModify;
  CardUtil.increaseCost(spellAbility, 2);
  return true;
}