Rizus, Prodigal Apprentice

As an additional cost to cast Rizus, Prodigal Apprentice, discard your hand.
{t}: Exile target card from your graveyard.
{u}{b}{t}: Put target card from target opponents graveyard into exile.
{u}{b}{r}{t}: You may cast any number of cards exiled with Rizus, Prodigal Apprentice.
"Maverick's teachings are my blood..."