this.power = new MageInt(3);
this.toughness = new MageInt(3);
// Whenever Gustcloak Sentinel becomes blocked, you may untap it and remove it from combat.
Ability ability = new BecomesBlockedTriggeredAbility(new UntapSourceEffect(), true);
Effect effect = new RemoveFromCombatSourceEffect();
effect.setText("and remove it from combat");
ability.addEffect(effect);
this.addAbility(ability);
}