Ostakul, the Basilisk King

Deathtouch, Trample
{1}{b}{g}: Put the top four cards into your graveyard and you put a creature from your graveyard onto the battlefield.
{2}{b}{b}: Target creature becomes a colorless artifact creature with power and toughness 1/1. It cannot attack or block. If the creature would die, it's controller draws a card and loses 1 life.