Darkest Hour

Light of Day

Circle of Protection: Black

{1}: The next time a black source of your choice would deal damage to you this turn, prevent that damage.

Zur the Enchanter

Flying
Whenever Zur the Enchanter attacks, you may search your library for an enchantment card with mana value 3 or less, put it onto the battlefield, then shuffle.

Exorcist

{1}{W}, {T}: Destroy target black creature.

Obsidian Acolyte

Protection from black
{W}: Target creature gains protection from black until end of turn.

Story Circle

As Story Circle enters, choose a color.
{W}: The next time a source of your choice of the chosen color would deal damage to you this turn, prevent that damage.

Northern Paladin

{W}{W}, {T}: Destroy target black permanent.

Greater Realm of Preservation

{1}{W}: The next time a black or red source of your choice would deal damage to you this turn, prevent that damage.

Righteous War

White creatures you control have protection from black.
Black creatures you control have protection from white.

Shifting Sky

As Shifting Sky enters, choose a color.
All nonland permanents are the chosen color.

Rune of Protection: Black

{W}: The next time a black source of your choice would deal damage to you this turn, prevent that damage.
Cycling {2} ({2}, Discard this card: Draw a card.)