super(ownerId, 144, "Selesnya Cluestone", Rarity.COMMON, new CardType[]{CardType.ARTIFACT}, "{3}");
this.expansionSetCode = "DGM";
// {T}: Add {G} or {W} to your mana pool.
this.addAbility(new GreenManaAbility());
this.addAbility(new WhiteManaAbility());
// {G}{W}, {T}, Sacrifice Selesnya Cluestone: Draw a card.
Ability ability = new SimpleActivatedAbility(Zone.BATTLEFIELD, new DrawCardSourceControllerEffect(1), new ManaCostsImpl("{G}{W}"));
ability.addCost(new TapSourceCost());
ability.addCost(new SacrificeSourceCost());