How to use

ActivateAsSorceryManaAbility

in

mage.abilities.mana

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

public GrinningIgnus(UUID ownerId, CardSetInfo setInfo) {
  super(ownerId,setInfo,new CardType[]{CardType.CREATURE},"{2}{R}");
  this.subtype.add(SubType.ELEMENTAL);
  this.power = new MageInt(2);
  this.toughness = new MageInt(2);
  // {R}, Return Grinning Ignus to its owner's hand: Add {C}{C}{R}. Activate this ability only any time you could cast a sorcery.
  Ability ability = new ActivateAsSorceryManaAbility(Zone.BATTLEFIELD, new Mana(1, 0, 0, 0, 0, 0, 0, 2), new ManaCostsImpl("{R}"));
  ability.addCost(new ReturnToHandFromBattlefieldSourceCost());
  this.addAbility(ability);
}