God-Eternal Oketra - 16 M WAR

Double strike
Whenever you cast a creature spell, create a 4/4 black Zombie Warrior creature token with vigilance.
When God-Eternal Oketra dies or is put into exile from the battlefield, you may put it into its owner's library third from the top.

mythic
Legendary Creature — Zombie God
From the Magic: The Gathering set War of the Spark.