Shaman of the Deep

{u}{u}, {t}: Sacrifice a land. You may exile a noncreature spell in your hand to reduce the
cost of the next noncreature spell you cast this
turn by the exiled card's mana cost (mana cost includes color).
{w}{w}, {t}: Sacrifice a nontoken enchantment.
Destroy target enchantment.
{b}{b}, {t}: Sacrifice a nontoken creature:
Destroy target creature.