// Tap: Add 1 to your mana pool.
this.addAbility(new ColorlessManaAbility());
// Tap: Add White or Black to your mana pool. Caves of Koilos deals 1 damage to you.
Ability whiteManaAbility = new SimpleManaAbility(Zone.BATTLEFIELD, Mana.WhiteMana, new TapSourceCost());
whiteManaAbility.addEffect(new DamageControllerEffect(1));
this.addAbility(whiteManaAbility);
Ability blackManaAbility = new SimpleManaAbility(Zone.BATTLEFIELD, Mana.BlackMana, new TapSourceCost());
blackManaAbility.addEffect(new DamageControllerEffect(1));
this.addAbility(blackManaAbility);
}