Zaku, the Merciful

Other Samurai you control get +1/+1 and
have menace.
Whenever Zaku, the Merciful blocks or becomes
blocked by another creature, put an Oath
counter on that creature. Whenever a creature
with an Oath counter on it dies, return it to the
battlefield under you control.
"As a reward for you service, I can grant you...
something far greater than honor."