Have

Arterial Flow

Each opponent discards two cards. If you control a Vampire, each opponent loses 2 life and you gain 2 life.

Forerunner of the Legion

When this creature enters, you may search your library for a Vampire card, reveal it, then shuffle and put that card on top.
Whenever another Vampire you control enters, target creature gets +1/+1 until end of turn.

Final Payment

As an additional cost to cast this spell, pay 5 life or sacrifice a creature or enchantment.
Destroy target creature.

Call to the Feast

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

Exultant Skymarcher

Sanguine Glorifier

When this creature enters, put a +1/+1 counter on another target Vampire you control.

Swamp

Death Wind

Target creature gets -X/-X until end of turn.

Bishop of Rebirth

Vigilance
Whenever this creature attacks, you may return target creature card with mana value 3 or less from your graveyard to the battlefield.

Harsh Sustenance

Harsh Sustenance deals X damage to any target and you gain X life, where X is the number of creatures you control.

Legion Lieutenant

Duress

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

Vizkopa Vampire

Squire's Devotion

Enchant creature
Enchanted creature gets +1/+1 and has lifelink.
When this Aura enters, create a 1/1 white Vampire creature token with lifelink.

Luminous Bonds

Enchant creature
Enchanted creature can't attack or block.

Queen's Commission

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

Revenge

Double your life total. Target opponent loses half their life, rounded up.

Revival

Return target creature card with mana value 3 or less from your graveyard to the battlefield.

Revival // Revenge

Plains

Martyr of Dusk

When this creature dies, create a 1/1 white Vampire creature token with lifelink.

Dusk Legion Zealot

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

Sengir Vampire

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever a creature dealt damage by this creature this turn dies, put a +1/+1 counter on this creature.

Ravenous Chupacabra

When this creature enters, destroy target creature an opponent controls.

Malakir Cullblade

Whenever a creature an opponent controls dies, put a +1/+1 counter on this creature.