Commander creatures you own have "Whenever an artifact or creature you control is put into a graveyard from the battlefield, each opponent loses 1 life."

As an additional cost to cast this spell, discard a card. Draw two cards and create two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

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 artifact: Add one mana of any color.")

Put target artifact or creature card from a graveyard onto the battlefield under your control. Shuffle Beacon of Unrest into its owner's library.

As an additional cost to cast this spell, sacrifice a creature. Return a creature card from your graveyard to the battlefield, then return another creature card from your graveyard to your hand.

{3}{B}{B}, {T}, Sacrifice X other creatures: Return X target creature cards from your graveyard to the battlefield. {5}{B}{B}: Put Champion of Stray Souls on top of your library from your graveyard.

At the beginning of your upkeep, if you have four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand.

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

{T}: Add {C}. Basic landcycling {1} ({1}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

Whenever a creature dies, put a charge counter on Black Market. At the beginning of your precombat main phase, add {B} for each charge counter on Black Market.

Bloodfell Caves enters the battlefield tapped. When Bloodfell Caves enters the battlefield, you gain 1 life. {T}: Add {B} or {R}.

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

As Foreboding Ruins enters the battlefield, you may reveal a Swamp or Mountain card from your hand. If you don't, Foreboding Ruins enters the battlefield tapped. {T}: Add {B} or {R}.

{T}: Add {C}. {T}, Sacrifice a creature: You gain 1 life.

{T}: Add {C}. {1}, {T}, Sacrifice Mind Stone: Draw a card.

({T}: Add {R}.)

Rakdos Carnarium enters the battlefield tapped. When Rakdos Carnarium enters the battlefield, return a land you control to its owner's hand. {T}: Add {B}{R}.

{1}, {T}: Add {B}{R}.

({T}: Add {B} or {R}.) Smoldering Marsh enters the battlefield tapped unless you control two or more basic lands.

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

({T}: Add {B}.)

Defender When Barrier of Bones enters the battlefield, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)

When Festering Mummy dies, you may put a -1/-1 counter on target creature.

As an additional cost to cast this spell, sacrifice two creatures. Draw three cards.

Enchant creature When enchanted creature dies, draw three cards, then discard one of them.

Deathtouch Exploit (When this creature enters the battlefield, you may sacrifice a creature.) When Fell Stinger exploits a creature, target player draws two cards and loses 2 life.

Scry 2, then draw two cards. You lose 2 life.

Equipped creature has skulk. (It can't be blocked by creatures with greater power.) Whenever equipped creature deals combat damage to a player, you may draw a card. If you do, discard a card. Equip {2}

{2}, {T}, Sacrifice Expedition Map: Search your library for a land card, reveal it, put it into your hand, then shuffle.

Destroy target artifact, creature, or planeswalker.

This spell costs {1} less to cast for each creature on the battlefield. Blasphemous Act deals 13 damage to each creature.

Bojuka Bog enters the battlefield tapped. When Bojuka Bog enters the battlefield, exile target player's graveyard. {T}: Add {B}.

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 target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.

When Ghastly Death Tyrant enters the battlefield, choose one — • Disintegration Ray — Destroy target enchantment an opponent controls. You lose life equal to its mana value. • Death Ray — Creatures you control gain deathtouch until end of turn.

Destroy six target creatures.

When Bastion of Remembrance enters the battlefield, create a 1/1 white Human Soldier creature token. Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life.

{T}, Sacrifice a creature: Put a charge counter on Culling Dais. {1}, Sacrifice Culling Dais: Draw a card for each charge counter on Culling Dais.

Morph {B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) Whenever another nontoken creature you control dies, draw a card.

Flying, haste Whenever Bladewing, Deathless Tyrant deals combat damage to a player or planeswalker, for each creature card in your graveyard, create a 2/2 black Zombie Knight creature token with menace.

Menace Negative Energy Cone — Whenever an attacking creature you control or a blocking creature an opponent controls dies, create a 2/2 black Zombie creature token. {5}{B}: Return Death Tyrant from your graveyard to the battlefield tapped.

Skeletons, Vampires, and Zombies you control get +1/+1. At the beginning of your end step, if a creature died this turn, you may pay {1}. If you do, create a 1/1 black Skeleton creature token.

Search your library for a card, put that card into your hand, then shuffle.

Bloodsoaked Champion can't block. Raid — {1}{B}: Return Bloodsoaked Champion from your graveyard to the battlefield. Activate only if you attacked this turn.

Clattering Augur can't block. When Clattering Augur enters the battlefield, you draw a card and you lose 1 life. {2}{B}{B}: Return Clattering Augur from your graveyard to your hand.

Cult Conscript enters the battlefield tapped. {1}{B}: Return Cult Conscript from your graveyard to the battlefield. Activate only if a non-Skeleton creature died under your control this turn.

Gutterbones enters the battlefield tapped. {1}{B}: Return Gutterbones from your graveyard to your hand. Activate only during your turn and only if an opponent lost life this turn.

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 Nether Traitor from your graveyard to the battlefield.

{2}{B}: Return Persistent Specimen from your graveyard to the battlefield tapped.

{1}{B}: Return Reassembling Skeleton from your graveyard to the battlefield tapped.

Until end of turn, target creature gets +1/+0 and gains indestructible. (Damage and effects that say "destroy" don't destroy it.)

This spell costs {3} less to cast if a creature died this turn. Flying, deathtouch

Skeletons you control and other Zombies you control get +1/+1 and have deathtouch.

Trample Whenever Geode Golem deals combat damage to a player, you may cast your commander from the command zone without paying its mana cost. (You still pay any additional costs.)

Enchant creature or planeswalker you control When enchanted permanent dies or is put into exile, return that card to the battlefield under your control.

Trample, haste Whenever Lightning Skelemental deals combat damage to a player, that player discards two cards. At the beginning of the end step, sacrifice Lightning Skelemental.

Other black creatures you control get +1/+1. {2}{B}, {T}: Another target black creature you control gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

Whenever a land enters the battlefield under an opponent's control, that player loses 2 life and you gain 2 life.

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 Skeleton Crew from your graveyard to the battlefield tapped.