Honroi-Hon, the Benevolent

{t}: Add {b/g}{b/g} to your mana pool.
Sacrifice a Celestial creature, {t}: Destroy target creature.
While you control another Celestial permanent, Honroi-Hon, the Benevolent has shroud.
Honroi-Hon, the absorber of light, the ward of darkness, the benevolent blackness, takes what we give and protects what remains.