Tuso, the Battered Blade

Bushido 1
Whenever a creature you control blocks or
becomes blocked, you may pay {b}{r}. If you do,
put Tuso, the Battered Blade onto the battlefield
from anywhere but your library or exile. If you
do, sacrifice a blocking or blocked creature you
control.
{t}: Destroy target creature that is blocking or
being blocked by a Samurai or Warrior you
control.