Triseon Grimore

Instant and sorcery spells you cast cost {1} less to cast.
{2}{t}: Add one mana of any color to your mana pool. When that mana is spent to cast an instant or sorcery spell, copy that spell and you may choose new targets for the copy.
{3}{t}: Put target instant or sorcery card from your graveyard onto the bottom of your library.