Kikai-teki, Mechanical Ronin

Haste; Bushido X, where X is the number
of kill counters on Kikai-teki, Mechanical
Samurai.
Whenever a creature dealt damage by a
Samurai you control this turn dies, put a kill
counter on Kikai-teki. Then that creature's
controller loses 1 life for each kill counter
on Kikai-teki.