Ancestor Worm

Exile a target non-token creature you control,
search your graveyard for a creature with a
converted mana cost no more than 2 over the
creature you exiled, put that creature into your
hand.
Able to speak with the dead once per week, it can even dispense valuable information to those who seek its
help, but there's one minor problem: all flesh within 30
feet of a gravecrawler, living or dead, slowly petrifies
into a crumbling stone that it feeds upon.