How to use

Hurricane

in

mage.cards.h

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

public Hurricane(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId,setInfo,new CardType[]{CardType.SORCERY},"{X}{G}");
  // Hurricane deals X damage to each creature with flying and each player.
  this.getSpellAbility().addEffect(new DamageEverythingEffect(ManacostVariableValue.instance, filter));
}

 List<Spell> spells = new ArrayList<>();

spells.add(new Hurricane());
spells.add(new Ice());