Farbog Barrow-Guide

Moulder 1 (When this creature enters the battlefield,
reveal cards from the top of your library until you
reveal a land card. Put those cards into your
graveyard.)

Threshold- As long as there is seven or more
cards in your graveyard, at the beginning of your
upkeep you may return target land card in your
graveyard to your hand.
{3}{g}: Regenerate Farbog Barrow-Guide