this.power = new MageInt(3);
this.toughness = new MageInt(3);
// {2}: Target white creature gains persist until end of turn.
Ability ability = new SimpleActivatedAbility(Zone.BATTLEFIELD, new GainAbilityTargetEffect(new PersistAbility(), Duration.EndOfTurn), new ManaCostsImpl("{2}"));
ability.addTarget(new TargetCreaturePermanent(filter));
this.addAbility(ability);
}