Legends of New Prydain | Chapter 21 | The Condition of a Vow

There is an old, bitter proverb among the grave-keepers of the high provinces: if you pray for a miracle from the dark, make sure you look closely at the hands delivering it. The shadows do not give gifts; they make loans. They will grant you your deepest, most desperate desires, but they will always ensure the interest is paid in a currency that will break your spirit forever.