At the beginning of your end step, you may sacrifice an artifact, creature, enchantment, land, or planeswalker. If you do, each opponent may sacrifice a permanent of their choice that shares a card type with it. For each opponent who doesn't, that player loses 2 life and you draw a card.

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

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.")

Whenever a nontoken creature you control dies, this creature deals 1 damage to you and you draw a card.

As an additional cost to cast this spell, sacrifice a creature. Draw two cards. If the sacrificed creature was legendary, draw three cards instead.

{T}, Sacrifice two other creatures: Any number of target players each lose 2 life and sacrifice a creature of their choice. You add {B}{B} and draw a card.

Scry 2, then draw two cards. You lose 2 life. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

{1}{B}, {T}, Sacrifice another creature: Draw X cards, where X is that creature's power. Choose a Background (You can have a Background as a second commander.)

Target player draws two cards and loses 2 life.

+2: Create two 0/1 black Thrull creature tokens. +1: You may sacrifice another creature or planeswalker. If you do, draw two cards, then draw another card if the sacrificed permanent was a commander. −10: Gain control of all commanders. Put all commanders from the command zone onto the battlefield under your control. Tevesh Szat, Doom of Fools can be your commander. Partner

This artifact enters with a page counter on it. Whenever your commander enters or attacks, put a page counter on this artifact. {1}, {T}, Remove a page counter from this artifact: Draw a card.

When this creature enters, each player sacrifices a nontoken creature of their choice.

At the beginning of your end step, each player loses 4 life unless they sacrifice a nontoken creature of their choice.

As an additional cost to cast this spell, sacrifice a creature or discard a card. Destroy target creature or planeswalker.

As an additional cost to cast this spell, sacrifice a creature. Destroy target creature.

Destroy all creatures. Each player loses life equal to the number of creatures they controlled that were destroyed this way.

Each player loses X life, discards X cards, sacrifices X creatures of their choice, then sacrifices X lands of their choice.

Flying Lieutenant — As long as you control your commander, this creature gets +2/+2 and has "Whenever this creature deals combat damage to a player, that player sacrifices a creature of their choice."

As an additional cost to cast this spell, sacrifice a creature or pay {3}{B}. Exile target creature or planeswalker.

As an additional cost to cast this spell, sacrifice a creature or enchantment. Exile target creature.

You may sacrifice a nontoken black creature rather than pay this spell's mana cost. Each opponent sacrifices a creature or planeswalker with the greatest mana value among creatures and planeswalkers they control.

As an additional cost to cast this spell, sacrifice a creature. Destroy target creature. Its controller loses life equal to the number of creatures that died this turn.

Skeletons you control get +1/+0 and have haste. When this enchantment enters, create a 2/2 black Skeleton Pirate creature token. At the beginning of your end step, if you descended this turn, you may pay 1 life. If you do, return this enchantment to its owner's hand. (You descended if a permanent card was put into your graveyard from anywhere.)

{T}: Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it 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.)

As an additional cost to cast this spell, sacrifice a creature. Flying, trample

{T}, Sacrifice a creature: Put two +1/+1 counters on target creature. {T}, Remove a counter from a creature you control: Create a Treasure token. {T}, Sacrifice an artifact: Create a 2/1 white and black Inkling creature token with flying. {3}{B}: Untap Fain.

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

Each other creature you control that's a Skeleton or Pirate gets +1/+1. Whenever one or more creature cards leave your graveyard, create a 2/2 black Skeleton Pirate creature token. (This ability triggers only from the battlefield.) {5}{B}: Return this card from your graveyard to the battlefield tapped.

Flash When this enchantment enters, target creature gets -4/-4 until end of turn. Whenever one or more creature cards leave your graveyard, each opponent loses 1 life and you gain 1 life.

Whenever another creature dies, or a creature card is put into a graveyard from anywhere other than the battlefield, or a creature card leaves your graveyard, Syr Konrad deals 1 damage to each opponent. {1}{B}: Each player mills a card. (They each put the top card of their library into their graveyard.)

Whenever one or more artifact and/or creature cards leave your graveyard during your turn, put a +1/+1 counter on target creature you control.

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

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.

Menace As an additional cost to cast black permanent spells, you may pay 2 life. Those spells cost {B} less to cast if you paid life this way. This effect reduces only the amount of black mana you pay. Whenever you cast a black permanent spell, target creature you control gets +1/+1 and gains menace until end of turn.

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

As an additional cost to cast this spell, sacrifice a creature. Add an amount of {B} equal to the sacrificed creature's mana value.

Devoid (This card has no color.) Whenever another nontoken creature you control dies, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this token: Add {C}." ({C} represents colorless mana.)

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

{T}, Sacrifice a black or artifact creature: Add an amount of {B} equal to the sacrificed creature's mana value.

Undying (When this creature 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.)

Flying When this creature enters, exile it unless you sacrifice another creature. Undying (When this creature 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.)

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.) {1}{B}, Sacrifice another creature: Put two +1/+1 counters on this creature. When this creature dies, create an X/X black Horror creature token, where X is this creature's power.

This creature enters tapped. When this creature enters, target opponent loses 2 life. Undying (When this creature 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.)

Haste Shadow (This creature can block or be blocked by only creatures with shadow.) Whenever another creature is put into your graveyard from the battlefield, you may pay {B}. If you do, return this card from your graveyard to the battlefield.

At the beginning of each opponent's upkeep, they lose 1 life and you put a -1/-1 counter on up to one target creature they control. Persist (When this creature 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.)

Menace When this creature enters, target opponent creates two 1/1 white Dog creature tokens. When this creature dies, each opponent loses 3 life. Disguise {1}{B}

{T}: Add {C}. {T}, Sacrifice this land: Put your commander into your hand from the command zone.

{T}: Add {C}. {T}: Choose target commander that entered this turn. Put a +1/+1 counter on it if it's a creature and a loyalty counter on it if it's a planeswalker.

{T}: Add {C}. {T}, Sacrifice a creature: Add {B}{B}.

({T}: Add {B}.)

{1}, {T}: You gain 2 life. {2}, {T}, Exile this artifact: Put all commanders you own from the command zone and from your graveyard into your hand. Then shuffle your graveyard into your library.

At the beginning of combat on your turn, exile up to one target card from a graveyard. {1}{B}: Adapt 2. Whenever one or more +1/+1 counters are put on this creature, put a creature card exiled with this creature onto the battlefield under your control with a finality counter on it. It gains haste. Sacrifice it at the beginning of the next end step.

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.)

Choose two target creature cards in your graveyard. Sacrifice a creature. If you do, return the chosen cards to the battlefield tapped.

When this Case enters, create a 2/1 black Skeleton creature token and suspect it. (It has menace and can't block.) To solve — You control no suspected Skeletons. (If unsolved, solve at the beginning of your end step.) Solved — {1}{B}, Sacrifice this Case: Search your library for a card, put it into your hand, then shuffle. Activate only as a sorcery.