this.subtype.add("Knight");
        this.color.setBlue(true);
        this.power = new MageInt(4);
        this.toughness = new MageInt(4);
        this.addAbility(FlyingAbility.getInstance());
        Ability ability = new SimpleActivatedAbility(Zone.BATTLEFIELD, new DestroyTargetEffect(), new ManaCostsImpl("{1}{W}{B}"));
        ability.addCost(new TapSourceCost());
        ability.addTarget(new TargetControlledPermanent(filter));
        this.addAbility(ability);
        this.addAbility(new SimpleActivatedAbility(Zone.BATTLEFIELD, new UntapSourceEffect(), new ManaCostsImpl("{2}{U}")));
    }