Kak'zyks, Engineered Hate

Menace, trample, toxic 2

Sacrifice another creature or artifact, {t}: Return target artifact or creature card with mana value
equal to the sacrificed permanent's mana value from
a graveyard to your battlefield. It is a black Phyrexian in addition to its other colors and types.

{1}{p/b}: Regenerate target Phyrexian you control.