this.color.setBlack(true);
this.power = new MageInt(4);
this.toughness = new MageInt(4);
// Extort (Whenever you cast a spell, you may pay {WB}. If you do, each opponent loses 1 life and you gain that much life.)
this.addAbility(new ExtortAbility());
// Whenever Treasury Thrull attacks, you may return target artifact, creature, or enchantment card from your graveyard to your hand.
Ability ability = new AttacksTriggeredAbility(new ReturnFromGraveyardToHandTargetEffect(), true);
ability.addTarget(new TargetCardInYourGraveyard(filter));
this.addAbility(ability);