Morgrim, Accursed Rite

Mill 4: Blue you control have flying until end of turn, and black creatures you control have lifelink until end of turn. Draw a card.

{2}{p/g}, {t}: Destroy target artifact, enchantment, or creature with flying.

{2}{u}{b}{g}: Transform Morgrim, Accursed Rite. Activate this ability only if you have 8 or more permanents in your graveyard.