{T}: Add one mana of any color in your commander's color identity.

Black creatures get +1/+1.

Flying

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)

When Bat Whisperer enters the battlefield, if an opponent lost life this turn, create a 1/1 black Bat creature token with flying.

Flying

{7}{B}, {T}, Sacrifice Blight Keeper: Target opponent loses 4 life and you gain 4 life.

Flying

{1}: Blighted Bat gains haste until end of turn.

Target player draws two cards and loses 2 life.

Flying

When Bloodhunter Bat enters the battlefield, target player loses 2 life and you gain 2 life.

Black creature spells you cast cost {1} less to cast.

Whenever you cast a creature spell, each opponent loses 1 life and you gain 1 life.

Charcoal Diamond enters tapped.

{T}: Add {B}.

Lifelink

{T}: Add one mana of any color in your commander's color identity.

Flying

When Courier Bat enters the battlefield, if you gained life this turn, return up to one target creature card from your graveyard to your hand.

Flying

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters the battlefield with a +1/+1 counter on it.)

Flying

Enchant creature

Enchanted creature has lifelink and "Whenever a creature an opponent controls dies, put a +1/+1 counter on this creature." (Damage dealt by a creature with lifelink also causes its controller to gain that much life.)

Flying

When Eyetwitch dies, learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)

Flying

{B}, Pay 1 life: Grimclaw Bats gets +1/+1 until end of turn.

Flying, first strike, haste

When Hierophant's Chalice enters the battlefield, target opponent loses 1 life and you gain 1 life.

{T}: Add {C}.

As Icon of Ancestry enters the battlefield, choose a creature type.

Creatures you control of the chosen type get +1/+1.

{3}, {T}: Look at the top three cards of your library. You may reveal a creature card of the chosen type from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

For each creature, its controller sacrifices it unless they pay X life.

Flying, deathtouch

Whenever you gain life, Malakir Familiar gets +1/+1 until end of turn.

As Metallic Mimic enters the battlefield, choose a creature type.

Metallic Mimic is the chosen type in addition to its other types.

Each other creature you control of the chosen type enters the battlefield with an additional +1/+1 counter on it.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Whenever a Human deals damage to you, destroy it.

Other non-Human creatures you control get +1/+1 and have undying. (When a creature with undying dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

You draw two cards and you lose 2 life.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)

As Obelisk of Urd enters the battlefield, choose a creature type.

Creatures you control of the chosen type get +2/+2.

As Palace Siege enters the battlefield, choose Khans or Dragons.

• Khans -- At the beginning of your upkeep, return target creature card from your graveyard to your hand.

• Dragons -- At the beginning of your upkeep, each opponent loses 2 life and you gain 2 life.

{1}, {T}: Razortip Whip deals 1 damage to target opponent or planeswalker.

Flying

At the beginning of your upkeep, you may pay {2}{B}{B}. If you do, transform Screeching Bat.

At the beginning of your upkeep, you may pay {2}{B}{B}. If you do, transform Stalking Vampire.

Flying

{1}{B}, Exile Sengir Nosferatu: Create a 1/2 black Bat creature token with flying. It has "{1}{B}, Sacrifice this creature: Return an exiled card named Sengir Nosferatu to the battlefield under its owner's control."

Target player draws two cards and loses 2 life.

Flying

When Skeletal Vampire enters the battlefield, create two 1/1 black Bat creature tokens with flying.

{3}{B}{B}, Sacrifice a Bat: Create two 1/1 black Bat creature tokens with flying.

Sacrifice a Bat: Regenerate Skeletal Vampire.

{T}: Add {C}{C}.

As Species Specialist enters the battlefield, choose a creature type.

Whenever a creature of the chosen type dies, you may draw a card.

Whenever you cast a black spell or a Swamp enters the battlefield under your control, you gain 1 life.

You draw X cards and you lose X life, where X is the mana value of a commander you own on the battlefield or in the command zone.

Ward--Discard a card.

Whenever another nontoken Vampire you control dies, you may pay {1} and exile it. If you do, create a 1/1 black Bat creature token with flying. It gains "When this creature deals combat damage to a player, sacrifice it and return the exiled card to the battlefield tapped."

Flying (This creature can't be blocked except by creatures with flying or reach.)

{B}: Vampire Bats gets +1/+0 until end of turn. Activate no more than twice each turn.

Skulk (This creature can't be blocked by creatures with greater power.)

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

Creatures you control have lifelink.

{2}{B}{B}, {T}: Return target creature card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step. If it would leave the battlefield, exile it instead of putting it anywhere else. Activate only as a sorcery.