Blightvine Elemental

Blightvine Elemental's power is equal to
the total number of creature and
planeswalker cards in graveyards.
When Blightvine Elemental enters the
battlefield, if {g} was spent to cast it, shuffle
up to three target cards from your graveyard
into your library. If {u} was spent to cast it,
target opponent mills three cards.