Diabolic Intent

As an additional cost this spell, sacrifice a
creature.
Search your library for a card and put that card
into your hand.
Then shuffle your library.
Three Rings for the Elven-kings under the sky,
Seven for the Dwarf-lords in their halls of stone,
Nine for Mortal Men, doomed to die,
But they were all decieved,
For another ring was made in secret..."