How to use

ImproviseAbility

in

mage.abilities.keyword

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

public ImproviseAbility() {
  super(Zone.STACK, null);
  this.setRuleAtTheTop(true);
}

public InspiringStatuary(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT}, "{3}");
  // Non-artifact spells you cast have improvise.
  this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new GainAbilityControlledSpellsEffect(new ImproviseAbility(), filter)));
}

public FoundryAssembler(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT, CardType.CREATURE}, "{5}");
  this.subtype.add(SubType.ASSEMBLY_WORKER);
  this.power = new MageInt(3);
  this.toughness = new MageInt(3);
  // Improvise <i>(Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1).)
  addAbility(new ImproviseAbility());
}

public SaheelisDirective(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.SORCERY}, "{X}{R}{R}{R}");
  
  // Improvise
  this.addAbility(new ImproviseAbility());
  // Reveal the top X cards of your library. You may put any number of artifact cards with converted mana cost X or less from among them onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield into your graveyard.
  this.getSpellAbility().addEffect(new SaheelisDirectiveEffect());
}

public ReverseEngineer(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.SORCERY}, "{3}{U}{U}");
  // Improvise
  this.addAbility(new ImproviseAbility());
  // Draw three cards.
  getSpellAbility().addEffect(new DrawCardSourceControllerEffect(3));
}

public BarricadeBreaker(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT, CardType.CREATURE}, "{7}");
  
  this.subtype.add(SubType.JUGGERNAUT);
  this.power = new MageInt(7);
  this.toughness = new MageInt(5);
  // Improvise <i>(Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
  this.addAbility(new ImproviseAbility());
  
  // Barricade Breaker attacks each combat if able.
  this.addAbility(new AttacksEachCombatStaticAbility());
}

public BastionInventor(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{5}{U}");
  
  this.subtype.add(SubType.VEDALKEN, SubType.ARTIFICER);
  this.power = new MageInt(4);
  this.toughness = new MageInt(4);
  // Improvise
  this.addAbility(new ImproviseAbility());
  // Hexproof
  this.addAbility(HexproofAbility.getInstance());
}

public WhirOfInvention(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.INSTANT}, "{X}{U}{U}{U}");
  // Improvise <i>(Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
  addAbility(new ImproviseAbility());
  // Search your library for an artifact card with converted mana cost X or less, put it onto the battlefield, then shuffle your library.
  this.getSpellAbility().addEffect(new SearchLibraryWithLessCMCPutInPlayEffect(new FilterArtifactCard()));
}

public SweatworksBrawler(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{3}{R}");
  this.subtype.add(SubType.HUMAN);
  this.subtype.add(SubType.ARTIFICER);
  this.power = new MageInt(3);
  this.toughness = new MageInt(3);
  // Improvise <i>(Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
  addAbility(new ImproviseAbility());
  // Menace
  this.addAbility(new MenaceAbility());
}

public WindKinRaiders(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{4}{U}{U}");
  this.subtype.add(SubType.HUMAN);
  this.subtype.add(SubType.ARTIFICER);
  this.power = new MageInt(4);
  this.toughness = new MageInt(3);
  // Improvise
  this.addAbility(new ImproviseAbility());
  // Flying
  this.addAbility(FlyingAbility.getInstance());
}

public FenHauler(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{6}{B}");
  this.subtype.add(SubType.INSECT);
  this.power = new MageInt(5);
  this.toughness = new MageInt(5);
  // Improvise
  this.addAbility(new ImproviseAbility());
  // Fen Hauler can't be blocked by artifact creatures.
  this.addAbility(new SimpleEvasionAbility(new CantBeBlockedByCreaturesSourceEffect(filter, Duration.WhileOnBattlefield)));
}

public EnragedGiant(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{5}{R}");
  this.subtype.add(SubType.GIANT);
  this.power = new MageInt(4);
  this.toughness = new MageInt(4);
  // Improvise <i>(Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
  this.addAbility(new ImproviseAbility());
  // Trample
  this.addAbility(TrampleAbility.getInstance());
  
  // haste.
  this.addAbility(HasteAbility.getInstance());
}

public MetallicRebuke(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.INSTANT}, "{2}{U}");
  // Improvise <i>(Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
  this.addAbility(new ImproviseAbility());
  // Counter target spell unless its controller pays {3}.
  getSpellAbility().addEffect(new CounterUnlessPaysEffect(new GenericManaCost(3)));
  getSpellAbility().addTarget(new TargetSpell());
}

public BattleAtTheBridge(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.SORCERY}, "{X}{B}");
  // Improvise  (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
  addAbility(new ImproviseAbility());
  // Target creature gets -X/-X until end of turn. You gain X life.
  DynamicValue x = new SignInversionDynamicValue(ManacostVariableValue.instance);
  this.getSpellAbility().addEffect(new BoostTargetEffect(x, x, Duration.EndOfTurn, true));
  this.getSpellAbility().addTarget(new TargetCreaturePermanent());
  this.getSpellAbility().addEffect(new GainLifeEffect(ManacostVariableValue.instance));
}

public MaverickThopterist(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{3}{U}{R}");
  this.subtype.add(SubType.HUMAN);
  this.subtype.add(SubType.ARTIFICER);
  this.power = new MageInt(2);
  this.toughness = new MageInt(2);
  // Improvise <i>(Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
  this.addAbility(new ImproviseAbility());
  // When Maverick Thopterist enters the battlefield, create two 1/1 flying Thopter creature tokens.
  this.addAbility(new EntersBattlefieldTriggeredAbility(new CreateTokenEffect(new ThopterColorlessToken(), 2)));
}

public SlyRequisitioner(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{4}{B}");
  this.subtype.add(SubType.HUMAN);
  this.subtype.add(SubType.ARTIFICER);
  this.power = new MageInt(2);
  this.toughness = new MageInt(2);
  // Improvise
  this.addAbility(new ImproviseAbility());
  // Whenever a nontoken artifact you control is put into a graveyard from the battlefield, create a 1/1 colorless Servo artifact creature token.
  this.addAbility(new PutIntoGraveFromBattlefieldAllTriggeredAbility(new CreateTokenEffect(new ServoToken()), false, filter, false));
}

public FreejamRegent(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{4}{R}{R}");
  this.subtype.add(SubType.DRAGON);
  this.power = new MageInt(4);
  this.toughness = new MageInt(4);
  // Improvise
  this.addAbility(new ImproviseAbility());
  // Flying
  this.addAbility(FlyingAbility.getInstance());
  // {1}{R}: Freejam Regent gets +2/+0 until end of turn.
  this.addAbility(new SimpleActivatedAbility(Zone.BATTLEFIELD,
      new BoostSourceEffect(2, 0, Duration.EndOfTurn), new ManaCostsImpl("{1}{R}")));
}

public HeraldOfAnguish(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{5}{B}{B}");
  this.subtype.add(SubType.DEMON);
  this.power = new MageInt(5);
  this.toughness = new MageInt(5);
  // Improvise
  this.addAbility(new ImproviseAbility());
  // Flying
  this.addAbility(FlyingAbility.getInstance());
  // At the beginning of your end step, each opponent discards a card.
  this.addAbility(new BeginningOfYourEndStepTriggeredAbility(new DiscardEachPlayerEffect(TargetController.OPPONENT), false));
  // {1}{B}, Sacrifice an artifact: Target creature gets -2/-2 until end of turn.
  Ability ability = new SimpleActivatedAbility(Zone.BATTLEFIELD, new BoostTargetEffect(-2, -2, Duration.EndOfTurn), new ManaCostsImpl("{1}{B}"));
  ability.addCost(new SacrificeTargetCost(new TargetControlledPermanent(new FilterControlledArtifactPermanent())));
  ability.addTarget(new TargetCreaturePermanent());
  this.addAbility(ability);
}