Balthagor, Realm-Breaker

{1}{b}: Search your library for a card, put that
card into your hand, then shuffle your library.
{3}{r}{r}{r}: If a source would deal damage to a permanent or player this turn, it deals triple that damage to that permanent or player instead.
{7}{u}{u}{u}: You may cast nonland spells from
your hand this turn without paying their
mana costs.