Eren, the Final Titan

Defender, indestructible, hexproof, reach
As an additional cost to play Eren, the Final
Titan, sacrifice Eren, the Attack Titan and Zeke,
the Beast Titan.
Whenever Eren, the Final Titan deals damage,
you may search your library or graveyard for a
creature card, put it onto the battlefield under
your control, then shuffle your library.