Briserec, the Shatterer

Exile half of your library, rounded up:
Reveal the top card of your library. If it is a land, add {r}{r}. If it is a noncreature spell, Briserec deals 1 damage to any target. If it is
a creature spell, you may pay life equal to
twice its mana value to put it onto the battlefield. Activate this ability only once
each turn and only as a sorcery.