Grave Horror

Regrowth (Whenever this creature enters the
battlefield, put the top 3 cards of your library into
your graveyard. For every creature put into the
graveyard this way, gain 3 life. For every
non-creature, non-land card put into the
graveyard this way, you draw a card. For every
land card put into the graveyard this way, search
your library for a basic land card, reveal it, put it
into your hand, the shuffle your library.)