Herald of the Unhallowed Night

Flying

When Herald of the Unhallowed Night enters, choose a color.

Whenever you cast a spell, if there are four or more card types among cards in your graveyard, creatures opponents control of the chosen color get -2/-2 until end of turn.

“To meet the undying you must seek their herald. She will carry you to them, to their cursed realm, to your ineluctable demise...”