this.expansionSetCode = "TMP";
// {tap}: Add {1} to your mana pool.
this.addAbility(new ColorlessManaAbility());
// {tap}: Add {U} or {B} to your mana pool. Rootwater Depths doesn't untap during your next untap step.
Ability ability = new BlueManaAbility();
ability.addEffect(new SkipNextUntapSourceEffect());
this.addAbility(ability);
ability = new BlackManaAbility();
ability.addEffect(new SkipNextUntapSourceEffect());
this.addAbility(ability);
}