This land enters tapped. As this land enters, choose a color other than black. {T}: Add {B} or one mana of the chosen color.

{T}: Add {C}. {T}: Add {W} or {B}. This land deals 1 damage to you.

This land enters tapped. As this land enters, choose a color other than white. {T}: Add {W} or one mana of the chosen color.

This land enters tapped unless you control two or fewer other lands. {T}: Add {W} or {B}.

This land enters tapped. Indestructible {T}: Add {W} or {B}.

When this land enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) {T}: Add {C}. {1}, {T}: Add one mana of any color.

{T}: Add {C}. {T}: Add {W}. Spend this mana only to cast a creature spell. {1}{W}, {T}, Sacrifice this land: Look at the top six cards of your library. You may reveal a Bat, Bird, Mouse, or Rabbit card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

{T}: Add {C}. {T}: Add {B}. Spend this mana only to cast a creature spell. {1}{B}, {T}, Sacrifice this land: Return target Bat, Lizard, Rat, or Squirrel card from your graveyard to your hand.

This land enters tapped unless a player has 13 or less life. {T}: Add {W} or {B}.

{T}: Add {C}. {1}, {T}: Move a counter from target permanent you control onto another target permanent. Activate only as a sorcery.

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {W}{B}.

This land enters tapped. {T}: Add {W} or {B}.

({T}: Add {W}.)

This land enters tapped. When this land enters, you gain 1 life. {T}: Add {W} or {B}.

({T}: Add {W} or {B}.) This land enters tapped.

({T}: Add {B}.)

When this enchantment enters, exile target nonland permanent an opponent controls until this enchantment leaves the battlefield.

Destroy target creature or planeswalker. You gain 1 life for each of its colors.

Enchant artifact or creature As long as enchanted permanent is a creature, it gets -1/-1 and can't block. Enchanted permanent has "At the beginning of your upkeep, you lose 1 life."

Destroy target tapped creature. You gain 2 life.

Destroy target creature.

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Destroy two target nonblack creatures. You lose 5 life.

Sonar Strike deals 4 damage to target attacking, blocking, or tapped creature. You gain 3 life if you control a Bat.

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

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.)

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

As long as you've lost life this turn, this creature has flying and vigilance. Whenever you gain life, put a +1/+1 counter on this creature. When this creature dies, put its counters on target creature you control.

Flying This creature gets +1/+0 as long as you control an artifact.

Flying

Flying {B}, Pay 1 life: This creature gets +1/+1 until end of turn.

Flying, first strike, haste

Flying

Flying, deathtouch Whenever you gain life, this creature gets +1/+1 until end of turn.

Flying Whenever you create or sacrifice a token, each opponent loses 1 life.

Flying Whenever a creature an opponent controls dies, you create a Blood token. (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this token: Draw a card.") Whenever you sacrifice an artifact, put a +1/+1 counter on this creature and you gain 1 life.

Flying, deathtouch Whenever you gain or lose life during your turn, Bats you control get +1/+0 and gain deathtouch until end of turn. This ability triggers only once each turn.

Flying At the beginning of your end step, if you gained or lost life this turn, look at the top four cards of your library. You may reveal a creature card with power 3 or less from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Flying At the beginning of your end step, if you gained or lost life this turn, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Flying, vigilance At the beginning of your end step, if you gained or lost life this turn, target opponent loses 3 life unless they sacrifice a nonland permanent of their choice or discard a card.

Flying This creature can't block. Blood Drain — {1}{B}, Pay 1 life, Sacrifice this creature: Draw a card.

Flying When this creature enters, target player loses 2 life and you gain 2 life.

(Gain the next level as a sorcery to add its ability.) If you would gain life, you gain that much life plus 1 instead. {3}{W}: Level 2 Whenever you gain life, put a +1/+1 counter on target creature you control. {4}{W}: Level 3 When this Class becomes level 3, return target creature card from your graveyard to the battlefield. You gain life equal to that creature's toughness.

Flying, lifelink When this creature enters, look at target opponent's hand. You may exile a nonland card from it until this creature leaves the battlefield.

Flying When this creature enters, each opponent loses 2 life and you gain 2 life.

Whenever you gain life, put two +1/+1 counters on Karlov. {W}{B}, Remove six +1/+1 counters from Karlov: Exile target creature.

Flying Whenever another creature you control enters, you gain 1 life.

At the beginning of your end step, if you gained life this turn, each opponent loses 1 life. At the beginning of your end step, if you gained and lost life this turn, create a 1/1 black Bat creature token with flying. {1}{B}, Pay 2 life: Draw a card.

Whenever you gain life, each opponent loses 1 life.

Flying Whenever this creature attacks, you gain 1 life.

Flying At the beginning of each end step, if you gained life this turn, create a 1/1 black Bat creature token with flying.

Flying, lifelink At the beginning of your end step, if you descended this turn, scry 1. (You descended if a permanent card was put into your graveyard from anywhere.)

Whenever you gain life, target opponent loses that much life.

Offspring {2}{B} (You may pay an additional {2}{B} as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.) Flying This creature can't block. Whenever you gain life, each opponent loses 1 life.

Menace Whenever this creature attacks, each opponent loses X life and you gain X life, where X is the number of other Squirrels, Bats, Lizards, and Rats you control.

You draw three cards and you lose 3 life.

You draw three cards and you lose 3 life.

As an additional cost to cast this spell, sacrifice an artifact or creature. Draw two cards and create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

At the beginning of your upkeep, you draw a card and you lose 1 life.

Target player draws two cards and loses 2 life.

Equipped creature gets +1/-1. Whenever equipped creature dies, draw two cards. Equip {1}

You may pay {B} rather than pay this spell's mana cost if there are thirteen or more creatures on the battlefield. Each player sacrifices thirteen creatures of their choice.

Choose up to five {P} worth of modes. You may choose the same mode more than once. {P} — Each player sacrifices a creature of their choice. {P}{P} — Draw a card for each creature that died under your control this turn. {P}{P}{P} — Each opponent loses X life, where X is the number of creature cards in your graveyard.

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

Whenever one or more creature cards leave your graveyard, create a 1/1 black Bat creature token with flying.

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

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