Disenchant

Sanctum Seeker

Whenever a Vampire you control attacks, each opponent loses 1 life and you gain 1 life.

Plains

Bishop of the Bloodstained

When this creature enters, target opponent loses 1 life for each Vampire you control.

Bishop of Binding

When this creature enters, exile target creature an opponent controls until this creature leaves the battlefield.
Whenever this creature attacks, target Vampire gets +X/+X until end of turn, where X is the power of the exiled card.

Swamp

Seal of Cleansing

Sacrifice this enchantment: Destroy target artifact or enchantment.

Paladin of Atonement

At the beginning of each upkeep, if you lost life last turn, put a +1/+1 counter on this creature.
When this creature dies, you gain life equal to its toughness.

Vampire's Zeal

Target creature gets +2/+2 until end of turn. If it's a Vampire, it gains first strike until end of turn.

Cobbled Wings

Equipped creature has flying.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Costly Plunder

As an additional cost to cast this spell, sacrifice an artifact or creature.
Draw two cards.

Dusk Legion Zealot

When this creature enters, you draw a card and you lose 1 life.

Call to the Feast

Create three 1/1 white Vampire creature tokens with lifelink.

Mavren Fein, Dusk Apostle

Whenever one or more nontoken Vampires you control attack, create a 1/1 white Vampire creature token with lifelink.

Bishop's Soldier

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Legion Lieutenant

Sheltering Light

Target creature gains indestructible until end of turn. Scry 1. (Damage and effects that say "destroy" don't destroy the creature.)

Vampire Nighthawk

Flying
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Vanquisher's Banner

As this artifact enters, choose a creature type.
Creatures you control of the chosen type get +1/+1.
Whenever you cast a creature spell of the chosen type, draw a card.

Guul Draz Vampire

As long as an opponent has 10 or less life, this creature gets +2/+1 and has intimidate. (It can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Sadistic Skymarcher

As an additional cost to cast this spell, reveal a Vampire card from your hand or pay {1}.
Flying, lifelink