Sakku-oni, the Corrupter

Deathtouch, Menace
When Sakku-oni, the Corrupter dies or is put
into exile from the battlefield, you may put it
into its owner's library third from the top.
Whenever Sakku-oni enters the battlefield, you
may return a creature card with converted mana
cost 3 or less from a graveyard to the battlefield.
That creature is a black zombie in addition to its
other colors and types.