Berex, Reckless Slasher

{b}{r}, Sacrifice a creature: Choose any target.
Flip a coin. If you win the flip, Berex deals
damage to the chosen target equal to the
sacrificed creature's power, and deals damage
equal to half the sacrificed creature's power to
you, rounded up. Otherwise, Berex deals damage
equal to the sacrificed creature's power to you,
and half the sacrificed creature's power to the
chosen target.