Lormath, Consumer of Magma

When Lormath enters the battlefield exile
three cards from your library. Put any of
those cards into your graveyard. As long as
that card remains in your graveyard, you may
cast it without paying its mana cost by
sacrificing Lormath. That creature's mana
value becomes {10}. The exiled cards have
'{b/r}{b/r}{b/r}: Cast this creature without
paying its mana cost.'