Urborg Lhurgoyf (186) [Dominaria United Promos]

Kicker {U} and/or {B} (You may pay an additional {U} and/or {B} as you cast this spell.) As this creature enters, mill three cards for each time it was kicked. Urborg Lhurgoyf's power is equal to the number of creature cards in your graveyard and its toughness is equal to that number plus 1.