Nyverix, Crazed Archivist

Ward {2}

{x}, {t}, Discard a card: Conjure three nonland cards chosen at random each with mana value
X into exile. Choose one of them. You may
cast that card without paying its mana cost.
If you do, Nyverix deals X damage to you. If
you don't, draw a card. X can't be 0.