Innestra's Chosen Sorceress

You may pay eight life or {w}{u}{b}{r}{g} instead of
paying this card's mana cost.
{t}: Target opponent reveals cards from the top
of their library until they reveal four instant or
sorcery spells then puts those cards into the
graveyard, you may cast the instants and sorcery
spells revealed this way using mana as though it
were of any color. Copy those spells, you may
choose new targets for the copies.