Duskrider Falcon

Idyllic Tutor

Search your library for an enchantment card, reveal it, put it into your hand, then shuffle.

Pestilence

At the beginning of the end step, if no creatures are on the battlefield, sacrifice Pestilence.
{B}: Pestilence deals 1 damage to each creature and each player.

Disciple of Grace

Protection from black
Cycling {2} ({2}, Discard this card: Draw a card.)

Swamp

Plains

Auriok Champion

Protection from black and from red
Whenever another creature enters, you may gain 1 life.

Dimir House Guard

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
Sacrifice a creature: Regenerate Dimir House Guard.
Transmute {1}{B}{B} ({1}{B}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Sphere of Grace

If a black source would deal damage to you, prevent 2 of that damage.

Darkest Hour

Urborg, Tomb of Yawgmoth

Each land is a Swamp in addition to its other land types.

Death Speakers

Knight of Glory

Protection from black (This creature can't be blocked, targeted, dealt damage, or enchanted by anything black.)
Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)