Crucius' Teachings

(Nonexistent mana costs can't be paid.)
Shroud, Indestructible
You may reveal Crucius' Teachings from your opening hand. If you do, artifact spells you cast cost {1} less to cast during your first turn, then shuffle Crucius' Teachings back into your library.
Whenever you draw Crucius' Teachings, reveal it. If you do, artifact spells you cast cost you {1} less
to cast this turn, then shuffle Crucius' Teachings back into your library.